My significant other went to rehab before we got together. They have been clean for 1 year - and keeps in touch with old friends from the treatment center. However, when they play destiny with their friends or they are talking with them on the phone - they turn into a different person; Sexiest and raciest jokes, insensitive comments and language and so on. Basically they turn into a real douche.

What should I do? It really makes me uncomfortable hearing them say stuff like that and secretly makes me hate them a little bit... any advice?