My best friend is annoying! What do I do?!?

When we first met we were almost inseparable! We did everything together; workout, go to movies, party, etc. It was a little weird at first cause how close we were, but I mean we just liked hanging out! But now that that's come to a plateau (thank God!), she drives me insane. Partly because she is quite possibly one of the most incompetent people I know and secondly she is greedy, selfish, rude, and UGH just annoying! She recently moved in with her boyfriend too and it's like I never hear from her anymore unless she needs something from me. And I always feel as though she looks down on me now. Like I'm not good enough to be her friend. You know when someone just has that attitude with you? That's exactly what I'm talking about! And I HATE it! I feel myself just barely tolerating her right now. I mean we still hang out and everything, but when we're together I just feel myself so tense and annoyed. I try to play it off, but idk how well I'm hiding it. Idk if she feels the same way. But it's getting to the point were I'm going to explode on her! I wish she'd see how she treats people sometimes! UGH! HELP!!