Haha, it's not an echo chamber.
Here's the thing, I believe I know the answer. Truth is, you can't "lose" a piece of yourself, that's a weird Christianese saying that's been popularized in our subculture with little to no Scriptural basis. It's silly, there is no "piece" to lose. Maybe physiologically, as a female, you lose your hymen... if it's intact, but that's about it.
If you have sex out of wedlock, part of your soul isn't missing, no piece is lost never to be found, nothing... your life isn't over, and you're a normal sinner like us all. Ask forgiveness and work on not doing it again.
This whole idea of "losing" something is simply not true...
Did you have sex before marriage? If not then you won't understand what is lost. Its not a physical piece of anything that is lost (well I mean not counting the hymen of course). I mean you lose a part of yourself. Its hard to explain. When you are pregnant and you lose the baby (miscarriage) aside from losing the baby you also feel like you lose something deeper... a piece of yourself. Or when you when you become saved or leave God... you also lose something that is not physical.
Heck another example, when you fo through any number of major problems in life, such as inappropriate content addiction, it takes something away from you. Something that changes you. In inappropriate contents case it takes away the reality of what sex is and should be. You have a warped view of sex. The you that existed before the addiction is not the same as the you that comes out on the other side of freeing yourself from inappropriate content.
Yet another example. A child, like my mother, who was raped, molested...etc by her father for the first 16 years of her life. She lost many things including her innocence. She lost alot of things that made her see the world different now.
So point being losing your virginity before marriage (sex that you had on purpose) makes you lose part of yourself. I had alot of sex with the girl I was first with. At the time I stopped caring about purity. It wans't a big deal to me. I didn't think I was anything, thought it was just a silly thing people said to scare you from having sex.
But after I got my life back onto track I felt part of me gone after realizing what I had done (sex before marriage). It was something I wish I could have back. That special moment in time that was meant for my spouse. Not some person I barely knew that didn't care about me. Then when I got married I felt that piece of me even stronger. Knowing my body was used before, that this wouldn't be my first time having sex with someone. That innocence in it was gone. Technically my wife had sex once with someone before she met me too so she felt that piece that was gone.
Sure our honeymoon was wonderful and God indeed made it special because we had waited until marriage. God is good like that. But sometimes you still feel that missing piece of you and regret it. Out of all the stupid mistakes I have made in my life, even some that are FAR worse probably biblically and morally, losing my virginity is still the one I'd go back and change.
Now if someone had sex before marriage and then got married and didn't see what was missing then I don't know what to say. Maybe you didn't feel guilty. Maybe didn't see it as a big deal. But it is. You giving something away that was meant to be saved for the right time with the right person to celebrate becoming one.
---edit---
And yes the bible to some degree talks about this. Its why being a virgin is important. If you want versus then look them up. I'm not here to prove anything but to share the Word and the Truth of God. If you don't understand the subject then thats between you and God to discuss when you see Him. In the meantime I will always talk to people who may make the mistake of losing their virginty because they don't realize what a mistake it is.