))))))) ) yoda ((((((( welcome to PC. sounds like you have been through it.... gee whiz, sooo sorry. talk about worst fears!! from your post, his change was the change caused by drugs.
how hard for you to have your partner "go bad" on you like that. one thing i offer for thought is: focus on your own healing for now. don't worry about your next relationship yet. maybe get more over this last one first, ya know?