Im goin to scream?

ok so i broke uo with that loser but were still frineds. idk if i can because hes so sensitive i go invisible cuz i dont want to talk to anybody on aim he gets like im sorry what did i do im like nothing watching a moive calm down. he constantly in a state of depression and he also has adhd so its hard for me to deal with him. then he constnatly says he still likes me and i already moved on. i just cant stand his personality im trying to be friends but hes so sensitive that his depression affects me to feel guilty. hes like a girl on her period not even kidding except its all the time. ahhh!!!! i want to be there for him but sometimes it gets to the point where i dont care cuz he says things so much. im nto a psychologist im not trained to deal with this so i dont know what he wants me to do. he thinks i am one i cant help him i try to listen i do but its the same story everyday his ex broke up with him 3 weeks ago shes 14 hes 19 idk waht to do how do i deal with a depressed person?