I was once sitting in a cinema with my two best friends, both who were male. We are all covenant children and one had served his mission while the other was preparing.
Before the film even started we had launched into a very heated discussion about GLTB issues.
I argued that ATTRACTION and IMMORAL behavior was completely different .
Attraction to the same sex
a) DOES NOT MEAN they have sex on their mind
b) does not make it a sin.
I've had many close lesbian, homosexual and bi-sexual friends over the years. I've found that usually there's a historical factor, psychological point of view or pure curiosity.
I think what's hit home with me though is, at a young age they've felt misplaced or unloved and they don't care who loves them as long as they're faithful and can see beauty in them. I think preference, in my experience, doesn't come into play until more interaction with the fascination/impulse/deep feeling is explored.
I'm going to add though that while I've tried to be a faithful friend, I do find that the more time I spend with them the more curious I may be myself but that's the point isn't it. Any kind of sexual sin, is SIN. So I try not to dwell on that and remind myself that sometimes personally, I confused love or lust with gratitude.
It's a complicated and fine line. I think you're very brave to join the forums! And I think it's important to realise we are all fighting the same battle, sexual purity is our biggest opponent on earth right now.