Why did batista attack rey mysterio after the match?

Well, if you rewind a bit of the match, you'll see that when Batista was doing a pinfall on the undertaker, I think it was, Rey pushed Batista out of the way, and he did the pinfall, but Rey could not do it. I don't blame Rey. It was a title match for the World Heavyweight Championship. Then after the match, Batista says he's tired of Rey backstabbing him, and that he was going to "rip his head off". Now Batista is the heel, and I love Rey Mysterio, and don't blame him.