She doesn't know I like her, but I do and I have for a few years. I thought she was interested in me, we hung out one night, it ended with lots of drinking and us having sex. It seemed like things were perfect and it was everything I wanted until right before we had sex she said "this is just as friends right?" And I didn't know what else to say so I said yes, but that feels like a lie, because I've liked her for three years now and I don't think I'm capable of just having sex with her as friends. I never did anything about it because for a long time she was in a relationship with my friend and then for a while we were living in different cities. 

I know I really should be honest with her, but the sex is fantastic and when we're hanging out and kissing and cuddling and having sex, it almost feels like it's a real relationship, and that feels amazing, and I'm not sure I have the will power to end that. We've been doing this for a while now and I feel like an asshole every time we fall asleep cuddling and I'm thinking about how great it feels to finally be with her while I know she's just thinking this is some fun between friends. 