I'm going to make this short. My family smokes. And sometimes I smoke and drink rarely. When I'm around my family I walk away when they smoke because I don't like the smell of it. When I'm around other people I'll smoke too or I'll leave because I don't feel like it.  So I had a significant other who smoked and I was fine with as long as he doesn't blow the smoke directly in my face like I'll be around him and don't care and I'll smoke with his friends too. But when I'm with my friends who don't smoke, isn't it rude of my ex significant other to smoke around my friends who don't do it. When I'm not smoking as well.