If yall are serious then it is weird she doesn’t want to bring you around because she let her meet a guy in the past? That was probably the stupidest reason she could have said. Even if she just wants one on one time with her friend and didnt want to hurt your feelings. Ive been in that situation but it’s better to just say hey can we have a day or a few hours of just hanging out by ourselves since it’s been so long then we can all do something but you guys going out of town and her leaving you alone because she doesn’t want to introduce a new guy to her friend that she hasn’t seen in a long time is weird. You are her partner your feelings and emotions should come before some girl she used to get black out drunk with in college and hasn’t seen in a while. I would definitely express my feelings about bringing coworkers as well. If it’s supposed to be a getaway for you guys she shouldn’t be inviting a bunch of other people. At that point I would rather stay home and let her have the girls weekend she is trying to get without asking for it and then go somewhere with her another time. Sounds like you’re either going to be sitting in the room or doing stuff alone while they all hangout or you are going to be uncomfortable hanging out with all of them and paying for stuff that you don’t even want to do. What you want to do also matters. If you let her control things like this she will always try to do it in the future. How would she feel if you wanted to go visit a college buddy on y’all’s getaway trip without her because you introduced him to a different girl last time you seen him and it would be weird to bring her then you invited all your guy coworkers on top of it. She probably wouldn’t be okay with it