Bridesmaid and friend regret

Completely disregarding the fact that these girls are my bridesmaids, and technically family, I thought they were my friends. One girl who is the gf of FH’s brother and the other is the gf of FH’s cousin. The gf of the cousin even lived with me for over a year which even included time before we were engaged. She left to do an internship at Disney in February and when she came back in July she seemed distant and annoyed by me anytime I would try to interact (she was still living with me when she returned). They would both go out and make plans together and not invite me or even tell me about it. They went to some girls night in party and posted pictures all over Facebook while I was home and had no idea. The brothers gf even came to my house to pick the cousins gf up and they still never told me. This happened a few more times but the cousins gf has since moved out. I very rarely if ever hear from them and when I do reach out to make plans they don’t want to do it especially if it involves inviting the guys to make it a family event with the rest of the family. If it doesn’t involve the guys, either they don’t have money and end up secretly going out together anyway or they don’t want to contribute such as driving. They even informed me after I told them how stressed I was about planning that they won’t show up to the venue until an hr or so before the ceremony because they booked someone an hour from the venue and don’t feel like going any earlier. At this point it seems like a friendship is of very little interest to them and they obviously don’t really care about the wedding if they can’t bother to get their makeup done so we can all be together on the biggest day of my life. I would think that as my “friend” they would try to make an effort to see/talk to me. At this point I don’t care to involve them in anything wedding related, I just want a friend as they are really the only ones “I have” here.