so there's this girl I really really like. But I don't know if she likes me back. we're best friends so I don't want to rush in and say I like her and possibly ruin our friendship.. we do a lot of things together too, but she claims to like this other guy. BUT she always flirts with me and does silly things with me as if we were more than friends, but later she acts like nothing happened at all. what's going on?