There is no problem with how the Bible defines fornication.
"Nevertheless, to avoid fornication, let every man have his own wife, and let every woman have her own husband." (1 Corinthians 7:2).
So in order to avoid fornication you have to have a spouse.
and why do you think that we can just rely on how one version of the Bible or another has been translated?!, maybe you already saw that there are different versions of the Bible and that their translations are different from one another, and aren't there biblical words, each of which has two or more meanings depending on the context in which it is/they are used in the biblical scriptures?!, as you could read from my posts, e.g. the biblical word "woman/wife/daughter" has very special meanings, including: (human) spiritual/religious belief/doctrine (as in Genesis 6:1-4), plus: unrighteous spiritual/religious deeds/works/activities (as in Revelation 14:4), etc.
yes, there is really no problem with the biblical scriptures from the perspective of the fact that the true God and His Saints/Prophets/servants, who wrote them, didn't lie in them, but there is visibly a problem with how you (are hasty to) toss around interpretations of biblical verses and passages, here is for example how you kind of present the biblical word "fornication" as entirely associated with sex and nothing else, and make it out to be a word having entirely sexual character, because you don't even give any explanation that make it clear what "fornication" is and why or how it is problematic/sinful, as if "fornication" is something impossible to be known at all, but nevertheless we have to know about it?!, and if there are many sexual abnormalities/irregularities in the world and even entire pandemics of such things as well as ever-increasing number of people affected with those diseases/disorders/deviations and thus concerned, it is not clear what the cause of all that mess is, but "we" continue to charge and burden people?!, and as if it is not important for "us" to know what the cause is when "we" manifest as (very/most) competent in spiritual things?!?!...
what is given to me on the part of the Kingdom of the true God to say about 1 Corinthians 7:1-7 is that a man could harass/abuse some woman sexually, which is why St Paul says in the 1st verse that it won't be good that a man "touch" a woman that way; from the 2nd verse on he says that in order that there be no sexual abuses/crimes, it will be better for every man (that cannot abstain from sexual relations with a woman) to have his own woman/wife lest he abuse some woman sexually or harm/hurt her man/husband, and that it will likewise be better for such a woman (that cannot abstain from sexual relations with a man) to have her own man/husband instead of turning out to abuse someone sexually, because at the heart of sin is causation/infliction of harm/suffering to/on the neighbor/cohabitant:
Romans 13:8-10 (NHEB) "Owe no one anything, except to love one another; for he who loves his neighbor has fulfilled the law. For the commandments, "Do not commit adultery," "Do not murder," "Do not steal," "Do not give false testimony," "Do not covet," and whatever other commandments there are, are all summed up in this saying, namely, "You are to love your neighbor as yourself." Love does not harm a neighbor. Love therefore is the fulfillment of the law."
goodness doesn't cause/inflict any harm/suffering to/on the neighbor/cohabitant, therefore goodness is the fulfillment of the law, and, as it was said before, the true God has not made the situation (be) complicated in this regard, so, what do the biblical words/terms "adultery", "fornication", "killing", "stealing", etc. actually mean?! (you have not yet given a serious explanation about this), (given that) if anyone has no bad intentions and tries not to cause/do evil to anybody, the same person should not be guilty of sin, so, when it comes to these things viewed from this perspective, who commits fornication, a person that causes/does evil to their neighbor/cohabitant, or a person that doesn't cause/do evil to their neighbor/cohabitant (by supposedly committing fornication)?!, but at least personally i cannot afford to condemn/doom someone to suffer, die or go to hell only because he or she is unfavorably affected by the system of spiritual unrighteousness/lawlessness/wickedness or only because that system deems/(tries to) make(s) them sinful, i cannot even afford to stamp them as sinners exactly because of these circumstances, let alone do anything more to their detriment
so, this is how the way things are arranged/ordered in the faith (definitely) matters, because the spiritual unrighteousness/lawlessness/wickedness is the original and very sin, while the physical evildoings are secondary sins dependent on the original one, for it is even enough that the order/arrangement of these things somehow be turned upside down in the faith, and there will be unrighteousness that can unfavorably affect many humans and even all humankind - as the situation has actually and unfortunately been such for the last decades, and as for the actions/acts that are supposedly considered to be sinful but actually are not such, they are not even sins
Is this a salvation issue?
Yes. For verse 9 says,
"But if they cannot contain, let them marry: for it is better to marry than to burn." (1 Corinthians 7:9).
maybe you know what it means e.g. to get burned in some activity or on something, or an act on the part of someone of making you burn, something burning you, etc. - in the figurative sense of these (phrasal) uses of the verb "burn"?, so is also the biblical verb "burn" in 1 Corinthians 7, some kinds of sexual activity can harm/hurt you, for example, if you have intimate relations with a woman that is someone else's girlfriend or wife, you can experience a love disappointment if she subsequently (decides to) abandon(s) you because of her boyfriend/husband, or you can be beaten or, God forbid, even killed by him or you can kill him in a fight and, God forbid, go to jail if at some point he knows about your intimate relations with her and attacks you, etc., and here i don't say there is no possibility for anyone to lose their salvation and go to hell for causing/doing evil to their neighbor/cohabitant
also, of course i don't "see" myself having sexual relations with my daughter or having sex with a strange woman (that i don't even know at all) just like that/like two monstrous beasts, or being homosexual - the first would be inconsistent with the relationships at least between father and daughter (let alone we talk about what my wife would experience if she knows about it), which would be nasty/disgusting, the second would be even very idiotic, primitive/barbaric and contemptible, the third would mean that i (should) be kind of sick, IOW, affected with a kind of mental deviation/disorder, and there can be many other examples of such a (kind of) behavior, but in principle no person would do such things if he or she is in their natural state according to the nature that the true God put in them (Romans 2:14-15), so such things are definitely not advisable/recommended
The Bible also says,
"Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind. Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God. " (1 Corinthians 6:9-10).
You have a problem with fornication and therefore you cannot see what the Bible says on this matter. For nobody ignores a basic moral principle without some kind of personal motivating factor. If you disagree. I think it is best to move on. I am not going to read your books here on the forum on how fornication is not always a sin (When in reality fornication is ALWAYS a sin) So it is best we agree to disagree.
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and what do the biblical words/terms "fornicators", "idolators", "adultereres", "effeminate", etc. mean?!, because in order that something be sinful, it must be somehow detrimental, harmful or painful to the neighbor/cohabitant?!, for example, if someone is homosexual, but without thus causing harm or suffering to their neighbor/cohabitant, then we can talk only about a deviation/disorder in that person rather than a sin/crime/evildoing on their part, because he or she doesn't do evil to any of their neighbors/cohabitants by being homosexual (especially if they are such against their will/of necessity)
what the true Lord God makes me speak about these things is that "fornication" is rather a causation/infliction of harm to/on the neighbor/cohabitant from the perspective of having some kind of personal or private benefit in a way it/this is detrimental to the neighbor/cohabitant, "adultery" is a causation/infliction of harm to/on the neighbor/cohabitant by intruding, obtruding, foisting, thrusting, forcing, harassing, abusing, insulting, offending, annoying, aggrieving, embittering, enslaving, etc. i.e. by rendering or through indirect impact or influence in general, the "idolatry" is a causation/infliction of harm to/on the neighbor/cohabitant through/from the perspective of practicing idolatrous religiosity which brings stumbling blocks, twists, corruptions and temptations to the world, "effeminateness" is a causation/infliction of harm to/on the neighbor/cohabitant through humility/meekness as in the case of people practicing great satanic spirituality such as yoga of patanjali and krishna, which brings stumbling blocks, twists, corruptions and temptations to the world, "abuse of mankind" is a causation/infliction of harm to/on the neighbor/cohabitant through some kind of spiritual possession of neighbors/cohabitants as in the case of some yogi(n)s who had spiritually possessed many humans through process of transcendental (yoga) practice/meditation (in one of the cases, once students of one guru teaching transcendental yoga practice/meditation saw him staggering/reeling and asked him why he staggers/reels, and he answerеd that he spiritually possesses many human bodies simultaneously and thus loses control over his own body sometimes), "drunkenness" is a causation/infliction of harm to/on the neighbor/cohabitant from the perspective of having pleasure, satisfaction or peace in activities, actions or acts with which the neighbor/cohabitant is unfavorably affected/afflicted/hurt/harmed, etc. - excuse me, but i have no posibility to explain the rest of those things in detail for now...
i have no problem with fornication, nor am i of the ones that don't understand the truth, nor do i ignore or disagree with it(s (moral) principles), of course, as i said above, i don't "see" myself doing weird/crazy things such as prostitution, fornication, adultery, the use of recreational drug(s), the use of excessive doses of alcohol, smoking, etc., nor do i recommend such things (to anybody), but i don't agree with causing/doing evil to my neighbor/cohabitant for being unfavorably affected by the system of spiritual unrighteousness/lawlessness/wickedness, IOW, for being a victim of that system, and i don't see how e.g. some homosexuals are guilty of being homosexuals against their will/of necessity i.e. because they cannot stop being such, but are driven to be such by something "external" - actually, such people are kind of mentally ill and they need Jesus Christ or someone like Him to heal them, not to be punished, or why e.g. must i persecute Romeo and Juliet accusing them of fornication only because they kiss and make love when they are just two young lovers?!
and if you still think that there is no difference e.g. between normal sex/marital life and sexual fornication, then i am sorry to say, you waste your time with vanity
Blessings