My brother has invited me and some friends to join him on a trip that we have taken for several years. He booked the last two rooms available. He would like to bring his new girlfriend and has suggested that she will probably stay in his room. I am not comfortable with this arrangement. I will have one or two girlfriends travelling with me. There is room for the girlfriend in the "girls' room." I have never met this girlfriend.
I want to add that there have been some hard feelings between my brother and I that I have been glad to put behind us. With that in mind, should I put aside how I feel about the rooming arrangement and try to ignore the situation while on the trip?
Unfortunately, the chief reason for the hard feelings is related to some very devastating outcomes from his sexual behavior in the past. I am a little shocked that he is proposing this arrangement when we have only recently made progress in our relationship. I am inclined to say either he provide a girls' only room or decline the invitation altogether. He will be hurt if I don't go but I think we might be risking a much bigger disaster if I go and feel very disappointed for appearing to approve of his behavior that has caused a lot of pain in the recent past.