I try to exercise, study, cook , watch a movie, etc and keep my self as busy as possible. But even after all this I am not able to take my mind off him. This is only happening suddenly. I did not have such feelings for this person a month ago but now since I know he's not good for me idk why I just cannot take him off my mind. Whatever I do, I'll keep checking my phone in between. If I block him I'll cry. I don't understand what to do.