Some buddies and one of their families and I went on a spring break trip recently and one of my other friends did not get invited and was kind of bummed out. It was not a "you cannot go" reason because it came down to space as we were driving about eight hours. Friend A (whom invited us and parents were driving), Friend B and Friend C and I all got to talking about what to do next spring break and we're thinking about a cruise. I asked if we should invite anyone else and Friend A immediately knew who I was asking in reference to. A said, "I'd be fine with it but you guys are together a lot, would you be willing to?" and I realized it was true. With some friends at college, we (myself and friend D who wasn't invited) were together a lot including school and the gym. He really doesn't go out on his own and refuses to hang out with others unless I'm going or I invite him. Looking back now I sometimes invited him to get him out because he wouldn't otherwise, but I don't want to force my other friends to have to put up with him on a vacation just because I'm afraid of his reaction if I weren't to invite him. I also wouldn't know how to tell him. Yes, he is friends with the other group, but not as close as I am to them. We also are all ok with keeping the group as small as possible to keep things simple as more people complicates things. So WIBTA for not inviting my friend to a trip with my other buddies?