two weeks ago totally out of the blue my boyfriend of two years broke up with me saying he can't cope with his depression anymore (the first is heard of it) and needed to take a step back from our relationship which I understood as I have PTSD and knew what he needed right now was me as a friend and for a week or so we were good friends but the past few days he's been out taking drugs with a group of "mates" all who take hard drugs and want to sleep with him it's killing me. When he goes out with them not answering his phone to anyone, so I've had to go over to his house which at first he is annoyed by but then seems grateful for and back to his normal self. However last night I stayed with him because he said he wants to kill himself and he was fine we watched a movie and he became himself again and woke up the same but around two he had an argument with his mum and he just snapped again told me he never liked me and just wants everyone to leave him alone so he can die I tried to get him to come with me to get help but he adamantly refused and punched a wall. He's gone out to meet these "mates" of his and I'm terrified he won't come home. I've been in touch with his mum and were both trying to find him but I have no idea what I can do to help him right now because I still love him so much and everything he says I know he doesn't mean but it hurts so much.What should I do? I've lost someone important to me to suicide before I can't let it happen again.