I feel like a teenager with a crush but I've fallen for my best friend and its really getting too much to handle now.

Hes always been super nice to me. When we're out he'll buy me dinner and drinks (he bought me dinner 3 times last week) we've slept together a few times and he'll often just cuddle up with me and kiss me.
He's very playful with me and teases me a lot. I've noticed most of his friends are male but he has a couple of other friends who are girls and he doesn't treat them as close as me even though he has known them longer.
Its just little things he does like for example we got a taxi home with 2 other friends a few nights ago, he paid and our 2 friends gave him cash back to split it, when I offered him my share he just said "no dont worry about it" and wouldn't take the money. Its not like I couldn't afford my share, we both have good jobs, its just the way he is with me.
But other times he will just treat me purely as a friend and pay no more attention to me than he would any normal friend.

The only problem is he's good looking and he knows it, he has girls all over him. One of his closest friends said to me that he hated seeing him mess me around in this way and wishes he'd just sort himself out as we're great together.

I finally broke down and told him how I felt over the weekend and he told me I was an amazing friend and he didn't want to lose me but there was no relationship there.
I told him I didn't want to lose him either but I felt messed around. He didn't feel the same and was adamant that he'd been straight with me from the start and wasn't looking for anything.

I'm finding it increasingly more difficult to be around him and push my feelings aside as I feel we'd be great together and all of our mutual friends think we already look like a couple half of the time.
I don't know what to do, I don't want to lose him as he's a big part of my life but I know I can't force him to have feelings for me.

You're a very sweet lovely and so so accommadating shag...

That's it.

You're a nice handy shag..

That does not sound so nice now.

You told him how you feel.he does not feel the same.. he is using you,his friends know it,he knows it,and now you know it..

Good looking,buys you dinner,pays for the taxi,buying his shag with no questions asked...

You need to stop seeing this guy,or at the very least stop having sex with him...

You may be a special shag,good enough to have sex with but not good enough as far as he is concerned to be his girlfriend.

Grab yourself esteem,and don't sleep with him.

And just one more thing.. if he is used to sleeping around perhaps getting checked for sexually tranmitted diseases might be in order.

This guy is using you, AND he doesn't have any feelings towards you? Don't push it. He said no, and so should you. You need to leave him alone until he gets his head on straight.