Awkward

A couple of weeks ago I went to my friends sleepover, and before that I was talking to my friends friend ( yes i know confusing) anyway I was just trying to be friends with him because I already liked some one, and I think he's got the wrong idea. Now he keeps trying to talk to me, but it's really awkward because I don't like him and I think he likes me, and he keeps asking for my phone number and stuff but I don't want to give it to him. I don't hate him or anything I just don't really want to talk to him because it's so awkward, and I don't want to be mean or anything, but I'm just sorta ignoring him and all his messages. My friend asks aswell about why I'm not talking to him, but I don't know what to do. I'm probably over reacting.