hmm.. funny, cause Ive been getting taught lately how to be just friends with a girl. And i can guarantee u if i lived near by so we could visit, i would be a dead man. thankfully she lives too far away. As for ur situation, i would say not only pray, but get a group of at least 6 people to prayer with u like maybe 4 or 5 times in the next six months. U may think thats overkill, but it really isnt. U wonder why it takes some people 30 years to get saved, maybe there is only one person praying for them (as in, not just general "God, please save the whole world prayers). Also from my experience with prayer, and a situation as strong as urs, i really dont think its overkill at all.
Second, i know she's ur best friend, but dont let the fear that God doesnt have someone even better out there that he could be getting ready for you. I mean, i think thats probably what it is. Cause i guarantee, that if u knew without a doubt that there was someone better, and that they would be a lot more fulfilling for ur life, that u wouldnt have trouble waiting maybe a year or so to meet them, would u? I think ud be willing.
The bible says it flat out, dont marry unbelievers. Its a command. Yea, ur always gonna hear crazy success stories, but how many stories do u hear about the bad ones, or even two christians who got married cause they thought they were perfect for each other and werent? I bet u a lot that there are tons more bad stories than there are good ones.
As for ur friends relationship, yea, id probably just stay out of it. I mean, imagine the best, what if they did get married? I mean, if she cant make up her mind while their engaged, i would hate to see her in marriage. And there might be things that could carry over if she ever dated u. U might know better than i would, but everyone has their stuff.
And is she having sex with the guy? I mean, i know they are engaged, or were a few times, thats a pretty close relationship if she is willing to be engaged, she very well could be willing to go further, and if shes willing with him, she might be more willing with u, not saying u would, but just the fact that she might means u would have to be careful about that.
Oh, and if they did break up, i would wait at least a year before going out with her. Im really serious. She, especially after being engaged to the guy, would need that time to unload some stuff from the last relationship and help to clear her mind and help get her life back in focus. I mean, if u outright dont listen to not going out with her, then might be a good idea to give her a good amount of time to take a deep breathe, get her life focus back in shape, and then take a chance at it.
As for problems as to why God wouldnt want us to be with unbelievers. Well, if u have different religions, what happens with the kids? Who are they raised under? Or are they raised under both? Is she willing to cuss, not care if u look at inappropriate content, does she smoke, does she drink? stuff like that. And what happens if she's into psychic and fortune telling stuff? I wouldnt want a girl bringing even the aura of that stuff into my house to stay. Not to mention if she is an agnostic, meaning not really any religion, then she could pick one up that isnt christianity along the way, and u could be in real trouble. Or if she chooses to use sinful escapes to help get away from her problems because the strong relationship with God isnt there.
I think thats a lot of the downside, but now u have to look at the non-existant positive side u would be missing out on. Count all those prayers that a possible christian spouse would be benefitting u, especially if they prayed for u every night? What about all the sacrifices the christian spouse would be willing to make because they really wanted to have an honorable and successful marriage before God? Or what about tithing? Will she even let u tithe, especially her money? And there is the joy knowing that u guys have the same beliefs, and that u can show her off in church, and u know that she is working on trying to become a more godly person.
And u could always stretch it and talk about the people that a christian spouse would be keeping close relationships with that could benefit u, and all sorts of other stuff probably.
I hope this helps, and dont be afraid to ask the prayer request board and us for prayers if u would like them.
tl,
bl.