Maybe someone can offer me some advice... I have this friend who I have known for a very long time. I am very close to him and to his girlfriend. They have been together for several years. Here is the problem: I think I may be in love with her. I can't tell. I've never been in love so I don't know if I love her or if its just infatuation.
The whole situation is very complicated because he has cheated on her several times and is very open with me about it because he doesn't know my feelings toward her. She has no idea that he has ever cheated on her. Also, she flirts with me all the time. It is not so obvious when he is around, but when he is gone, it seems like she is doing everything short of coming out and asking me to ravage her.
He has to go out of town sometimes on business and when he does, she often asks me to stay with her so she has a man there to feel safe. It takes every ounce of restraint that I have to keep from saying something to her. I have spoken to a few other close friends about this and they agree with me that she flirts with me hardcore. I'm so confused. I really like being with my friend, but I really like his woman... Also, I should point out that I am 19 and she is 23.
Should I tell her how I feel?
Should I tell her about his cheating?
How do I know if I love her?
I'm looking forward to hearing what everyone has to say about this. Thanks in advance. 
Yeah im kinda with Brandye on this one... that seems kinda Odd, maybe you could tal kto her? i duno i'd suggest talking to her about how she feels and how you feel..
if you werent... umm wanting to get with her i'd tell her he is cheating, but since you are.. ehhh they might assume that to just be the way you are trying to get her and arent being honest... i duno i always tell the people about that, but normally i can tell them before they start dating LOL
Jamie
If I asked a man to stay with me while my partner was out of town, it would not be to help me to feel safe!!!!
Tough call!
It probably boils down to risk versus reward.
I'm inclined to guess it's not about love, really, it's about hormones and sexual attraction - on both sides.
She may be one of those women who enjoys the excitement of naughty. That being the case, the question becomes one of how much excitment she actually wants to enjoy. Asking you to stay with her when he goes out of town is bit over the edge and suggests she might be looking for some benefits on those lonely nights.
You could make a serious pass at her the next time you're alone and if she freaks claim you were "testing" her for your friend's benefit.
Or you could sit down with her and ask her what she thinks is going on between the two of you. If she replies "nothing," tell her you really can't continue to stay with her alone, etc. and get some distance between you and her. Otherwise, you risk losing a friend and you're wasting time that you could be spending out looking for your own girl.
As for your question of whether or not to tell her about his cheating, that answer is a simple "NO!" That accomplishes nothing UNLESS your intent is to "steal" her away from him or get her to justifiy cheating on him with you.
If you want to bed her, go for it, but just be upfront about it.
It won't help you with the question of whether or not you love her, of course. That's a question not easily answered - particularly when it involves someone you do not actually have a relationship with!