Why a girl who rejected me wants to be so friendly?

We were seeing each other for some time. She had a crush on me for a long time. We kisses few times and went out. Then out of nowhere she rejected me. It was two years ago. We unfortunataly see each other pretty often cuz we got a lot of mutual friends. We talk normally but i kind of want to keep a distance. She is really extroverted so she behaves in a warm way to almost everyone. I just dont like when we meet for example and she wants to hug me or wishing for a birthday or something a kiss, touching my beard, and stuff. I just dont like it, i dont want to hug her or stuff, when i kind of avoid that hug she gets pissed off and says i dont like her. I dont get this.

Why a girl who rejected me wants to be so friendly?
Post Opinion