they did have a group they sat with for the first month and then when they started sitting with us they said that if they had known we had the same lunch as them, they would've sat with us earlier....i know it's not entirely my problem, but all of us are really annoyed with them and don't want them sitting with us anymore, plus my friend said that because they were their cousin, they wanted me to do it instead....and then they'd do it. we've been friends for 5+ years, and they do care about my feelings....
we have done this (referring to last paragraph) but they try telling us of and say things like "you wanna fight me" and would continue to do what they're doing and wouldn't do what we had asked them to do (lowering their voice, screaming across the table, and saying mean things to people at our table)
we're still trying to work things out....