Why don’t my friends invite me anywhere?

Anonymous
So my “friends” never include me or invite me anywhere anymore. I’ve noticed this trend for about 2 months now, so I decided to ask one of the girls in the group that I’d consider myself “closest” too. She told me she noticed the pattern and that the group is more “go with the flow” and makes last minute plans with each other that usually doesn’t include everyone. She keeps making a point that not everyone can be invited everywhere all the time — and the thing is, I get that… but I’m still never invited. And the thing that’s really hit home with me is the fact that she knows I feel excluded and still doesn’t make an effort to include me in group hang outs. The same day and following weekend that I had the conversation with her, the group went to the movies/bars without inviting me. They have group texts too, obviously without me. Again, I know I don’t have to be involved every time, and I don’t need a group text to solidify a friendship, but this continual pattern of not considering me in plans just hurts my feelings. I’ve always bent backwards for these people and have tried making plans (to which they all pass on). It seems like I consider them friends WAY more than they consider me one. I’m clearly not in the group anymore. Can someone provide insight? Is there something wrong with me? What should I do other than act like it doesn’t bother me? I guess consider this a vent session. I just want some perspective. Surely I’m not making something out of nothing. I mean, the girl I talked to admitted noticing it… but continues going off with the group and not making an effort to include me. Why?
Why don’t my friends invite me anywhere?
3 Opinion