Its a bit weird how hes just gone from weed to heroin just like that.. some one hes with obviously takes it and probably pushed it on to him. The minute any of my mates would be like that and im gone.
It sounds like hes just going to get worse. I really would stop feeling sorry for him. How can he come round and see his kids then rob off you. But thats what heroin does to you.
I see my best mate now whos on it picking cigarette dockers off the floor and begging. Its a shame really. But there is nothing you can do. He needs to do it himself. You need to start thinking of you and your kids and move on. Otherwise its going to make you ill.
Good luck