I first got suspicions that I wasn't straight at 13 and it took me years to come to a conclusion that turned out to be completely wrong. I don't think I'm alone in that! I remember how confused I was though and for how long, so I sympathise with you. Don't do anything you don't want to do and I think at 14 you could afford to just put your focus into whatever you enjoy and whatever you want to do and perhaps more "evidence" for your orientation will come along in its own time.

As an aside, it's possible that her saying you are cute isn't an indication of her homosexuality. I've known straight women complimenting other women's appearance, cute being a word used. She might have been party to this guy or his friend saying you were cute and agreed with/encouraged those thoughts by giving her approval of your cuteness factor.

Anyway, I also agree with others that the whole "married to best friend" thing isn't an indicator of anything. I think we naturally flock to others of the same sex before we hit puberty and become close with members of the same sex and it is all innocent before we hit a certain age (I say "we" because I bypassed that part of life lol). Using it as "evidence"... the thing with that is that you interpret it by what happens later. If you are straight, you will forget that event. If you do discover homo/bisexuality, you will take that event as evidence. In itself, it doesn't mean anything either way.