How do you stop liking someone?

I apologize for asking this question again but I need more responses, the couple I got so far were very helpful but I need more opinions, thank you! here's the question:

So this is a very weird question because this whole situation is very unlike me and I don't know how to deal with this. Let me summarize it this way... I never have problems with women... somehow it just works... I never get hung up on someone, if it doesn't work, it doesn't work... I move on...

well this time it's really different... maybe its the fact that I'm getting older and re-evaluating my priorities, maybe it's the fact that this girl is really that awesome, but I need help. There is this girl who I really like. We get along great and seems like everything is awesome but it's really not. The problem comes from the fact that I really like her in more than a friend way and she really doesn't. I haven't known her for an incredibly long time (couple of months now) but we've been really close recently. I asked her to dinner, blah blah, you know the drill, she said no... I asked why? if there was something that I did or something wrong with my personality... she said no, that she loves my personality but just wants to be friends. From her tone, body language, knowing her pretty well I can guarantee you that the reason why she doesn't want to be anything more is that I'm not good looking enough for her. I'm sure of that, I'm very good at reading people. Also that's the funny thing, I'm not a bad looking guy but I guess not enough for her. So really there is nothing I can change about myself to "win" her... please don't suggest trying to change something because there really is nothing I can change. We get along amazingly, she just doesn't wanna date me. And that's alright, I'm not hurt. The problem is for some dumb reason I still really like her in more than a friend way and as I mentioned before, she doesn't. So now I gotta figure out how to stop liking her. Any suggestions? I can't outright stop seeing her, we have too many friends in common to cut ties completely and nor do I really want to do it, at the end of the day she's a great friend. So now I'm stuck trying to figure out the "grey zone"... I can't date her and there's nothing I can do to change her mind, and I can't not see her... so... how do I stop liking someone and accept just being friends? This is an awful situation and I've never had to deal with this... help please... thank you!