Does your bf ever do this?

My boyfriend constantly has his friends over for smoking sessions but I'm never invited out with them? We are constantly smoking together but just a sec ago his brother called me and him out to smoke and my bf is like I'll be right back and left our room to go out there. It honestly really bothers me because when we have a blunt burning everybody is smoking on it (his friends) but then when they have one burning my bf expects me to just stay inside. Also sometimes his friends gf's will come over or his brothers gf and my bf STILL doesn't invite me even after I've said countless times that I don't appreciate being left out. It's honestly to the point where I feel left out all the time and consider moving back home now. This is a constant thing.. my bf never wants me around but if I want to go out with my own friends it's always a problem and uses the "your friends aren't real towards you" excuse. Just a few days ago my bf had his friend over and they were going out to smoke in his car and at the time I was just chilling so I asked to come and he kept asking me why over and over again so I just stayed inside because he makes me feel unwanted to begin with. Like this actually hurts my feelings and he brushes it off like I'm being childish for feeling this way. We live together btw.