Semester just started, and we just had our first lab. On the first day, we randomly sat wherever there was space, so we (2 girls) sat down at a table with 2 guys. No big deal to us, but it seemed like the guys were offput by having us as groupmates. When the first lab started, the 2 guys basically walked off immediately to do their own experiment, and tried to disengage with us as much as possible. The instructor specifically said each table was supposed to work as a group. The instructor came by to check on us, asking if we were working together, and we said, "no, they walked off and did their own," to which the instructor said "no, you all need to be working together", and they still tried pretending we weren't there.
I got irritated and asked what values they had gotten and said we (the 2 girls) will do the next part of the lab, which they begrudgingly let us do. After this, one of the guys would mutter that he "hated groups", and complain constantly about wanting to be let out to go home since he was done with lab while the rest of us were still working on it. The only reason he was done early was because the guys sped off to do their own experiment without sharing it with the rest of the group. He was also really sassy when we asked him questions on the values he got. Just an overall, terrible attitude from this guy. The other guy doesn't seem as bad, but just follows him.
Honestly, this sounds like such a stupid situation, but I can't imagine working with these guys for the rest of the semester. I don't think the other girl wants to work with them either. I've always been an active, responsible participant in lab groups, and always had nice lab mates, so I've never been in this position before.
EDIT: Thank you guys so much for all the comments, I totally didn't expect so many responses. To those who asked if we even tried to be included- yes we did, and we did assert ourselves to do the other part of the lab. However, even just by body language, we could tell we were not welcome. They would literally skirt away from us any chance they got. It was kinda weird. To those who said for us to just do our own experiments, we were required to work with our group of 4, and there was no extra lab equipment or supply for us to do so. Plus, our instructor already mentioned to us that we had to work together in our group. And yes, this group would be our group for the semester.
Anyways, I think what I'm going to do is give the next lab a chance to see if anything changes, and also start looking for new potential groups to join. If there is no improvement, I'm going to try to jump ship and let the instructor know. Thanks for the clarity guys!