I have a roommate named M, who is 25 years old, and he has a girlfriend who is 22. We all went to the same college, so we’re pretty close. My friend and I have jobs and go to the office. His girlfriend visits our apartment very often, mostly on weekends. My friend smokes a lot, and his girlfriend has been asking him to quit for a long time. One day, while I was working in my room, they were arguing about something. I came out and saw that she had put his entire pack of cigarettes in a jug of water. Later, he ordered a new pack and smoked in front of her, not caring about her feelings. This was just one incident; they have had similar fights like this before. I’ve told her a few times to leave him, but she said she loves him and considers all these actions to be playful. But I see it as toxic behavior, not just playfulness.