So obviously I’m not a part of their relationship and this is all just what I’ve read about it. She was married to some dude (I don’t remember his name) and things went south and she had really bad self esteem after she divorced him. Chris Pratt had worked with Anna before while she was married and basically was like, the second you are ready to start dating again, I want to date you. They dated, got married and he was still not famous. Then he started getting big, cheated on her with Jennifer Lawrence and things went south from there. I don’t know anything except from articles/statements etc. so whether she was crazy, he was crazy, both were crazy, I don’t know. I just know that she has said in multiple articles that the reason for their breakup was basically chris wasn’t ready for the responsibility of having kids.