For some time now (almost a year), my friend and I have been hanging out with a group of eight people. But the more time passes, the more excluded and left out we feel. We hardly ever have any real conversations, aside from dirty jokes, and they never talk to us seriously because they rarely take us seriously. And yet, we don't just make bad jokes, and I try my best to talk to them, but it's no use. I'm trying to reintegrate into the group, but my friend doesn't want to try because he "doesn't want to bother anyone." What should I do?