If your boyfriend has no relation to the woman then it is completely unacceptable and must be discussed. If there is no legitimate reason he is going on vacation with her he needs to apologize and promise never to do it again while you are with him or the relationship needs to end because there are trust and fidelity issues at hand.
OMG yes!!! This reminds me of something that happened to my friend. He want on vacation and he didn't tell his girl friend that some of the people that were going with him were girls, one of the girls was me (be happy he told you that there was a girl going). During the vacation One of the girls picked up the phone with a sexy voice and said "hello" thinking it was one of his guy friends. It was his girl friend. Lets jut say the two are no longer together. Keep your boyfriend and convince him not to go. Bad things happen when girlfriends aren't around when their boyfriends are with other girls. Good luck.
Well, it's never easy to have to watch You'd boyfriend hang out with another girl over the summer. First, analyze your boyfriend. Does he seem like the kind of boy who would cheat on you? Also, sit down and talk with him and tell him if you are angry, jealous, or sad. Don't get on his case all summer just because you suspect he might be cheating on you; all that does is make things worse. If your boyfriend turns out to like the girl and dump you, it's NOT worth it. Good luck!
Yes I'd be mad! Why are you, his girlfriend, not invited but some other chick is? That's crazy. I'd break up with him just for the mere fact he planned on doing something like that! You know exactly what's going on.
Well in your post answer you said it was him, his parents, the girl & her parents. Sounds like their parents are friends & they're because the parents said so. I don't think you have anything to worry about unless the parents of both want them to have a relationship which I doubt very much. Don't let tour thoughts take you places where you dint want to go. Don't fret without proof. It's all to do about nothing.