Help!!!

So this whole situation is so stupid. My boyfriend of 3 years is having a friend down that he hasn’t seen in a while. His friend brought his girlfriend for the pure reason so we could all hang out together and go on dates. Now that there here I’m at home in bed because his FIVE seater car is not big enough for all FOUR of us. He won’t let me drive up there so hang out with everybody and I feel left out and like shit on. I don’t think that’s right at all but I could just be crazy. What y’all think?