I have two groups of friends. The one group of friends are all in my classes and they have the same hobby as me (ballet) and I just have way more in common with them and love spending time with them. But theb I have another group of friends who I dont really have much in common with and we just really only became friebds because we didnt know anybody else. So I wabt to drift away from that group because they always expect me to eat lunch with them and go out with them on weekends. How do I drift away without causing arguments and lots of confrontation. Please help?