You're "right" on several fronts, imo. Great opportunity. Nothing personal, but great that you allowed this to be a family time. Tough as it may be to fathom and accept, girl and boy friends can be real confounder/complicators in this. He needs to focus and fly in this transition, and your genuine care allows him that total freedom. So many romantic interests perceive they can keep these doves from flying by holding them too tightly. Rarely does that allow for the bird or the relationship surviving. Confounding this even more is adding stress to the 3 way relationship among you, your boyfriend and his parents' Mid, and those parents. For now, you need to take the back seat or even no seat. Read the Parents Plebe Weekend title and your potential inclusion carefully, noting the moniker of that event. Your role is better complementary than competitive.