Your studies & your plans for dental school should be your priority....like a job IMO & nothing should get in the way of that....there are always time to make real lasting friends after you are finished with school or in dental school where you have lots in common with those in school with you.

I agree though, if they plan something that sounds good & that you are interested in....go ahead & go along but basically keep these girls at a distance since it's obvious that they want to party rather than have good wholesome activities to enjoy.

I was a commuter at the university I went to but then most were. I never had a group of friends...I was mostly a loner & really didn't need friends to make my life meaningful....I focused on my computer degree which took up most of my time though stupidly I ended up finding a guy & getting married....the biggest mistake of my life....but that's another whole novel. Best to focus on your goals....you will find friends that fit into that life as you get farther along your path in the university.....don't make yourself miserable over not fitting into the lifestyle that those girls want to make out of their university experience.....it's for EDUCATION!!!! not for partying.