What should I do about these relationships? I know it's long but please read. It's even worth 10 points. (:?

So, at the moment 4 guys like me. they have all told me so I'm not one of those girls who just assumes, i always need proof. two are best friends. like legit best friends but they both text me and tell me how perfect, beautiful, gorgeous, and amazing they think I am. bull s*** I know lol guys will say anything lol. one of the other ones asked me out yesterday, but I turned him down because he's dated pretty much the whole school or asked them out he claims to have liked me for a year, but I highly doubt it. the last one I'm pretty sure only likes me a little because he just broke up with his girlfriend and she's moving to alabama. he says he likes me and I really really like him. well, one of the best friends asked me out yesterday too, and I was so tired on the phone that I didn't know what I was saying and I didn't want to be mean because we are really really close friends. so I said yes. well I guess I didn't seem so excited about this when the realization hit me this morning because he kept asking what was wrong and if I wanted to wait until school and I said it would be a good idea. yet he refuses to understand so he keeps saying that I should just try it and stuff and I'm planning on trying to end it. but I don't know how to do it nicely. any ideas? and I might be hanging out with the one I really like on monday so I need to do it by then.. I just don't like my boyfriend like that... I really like the other one!!! what do I do??!!!!!! thanks XD