basically im forced to sit across from him in one of my classes and i seriously will not even be looking at him/ acknowledging him and he'll freak out on me in front of other people. like last monday he just came at me out of nowhere saying " what is up with the faces youre making it looks like someone wiped baby shit all over your face" like in front of 2 other people & then he'll text me and tell me about all the girls he's fucking and just stupid ass hurtful shit that i really dont want to know. a few people have also been telling me hes been talking about me & shit when hes the one that broke up with me. i seriously dont understand what i did to him. he turned from the psycho ass controlling boyfriend to the guy that dumped me and didnt give a shit about me the next day like complete 180. anyways i dont understand why hes being like this & i need some advice on what i should do.