feeling alone in a house full of people

here lately, I’ve been feeling so incredibly lonely in my sorority. I’m in what others would consider a “top house,” so I was thrilled to join what I thought would be an amazing sisterhood. I went in so excited to meet new girls and to make genuine relationships, but I just don’t think I have. There’s always someone else that they go to before me. I have friends, but I’m no one’s “best friend.” I don’t have anyone that I could “see as one of my bridesmaids.” I’m always the one initiating plans, never the one that’s invited. I tell my “friends” about my highs and my lows, and get nothing or a “that sucks” in response despite how I always try to go out of my way to make their bright days brighter and their bad days a little better. It just seems as if I am an option, sometimes one of the last options, never put first.

For some peace of mind, is there anyone else out there that has felt this way/feels this way? no matter what sorority you’re in?

and no, I’m not a new member