If you are searching for deeper, more meaningful friendships, check out Sally Clarkson's I Take Joy Post - The Secret of Finding a Mentor! Working diligently at friendship.
I, too have felt "left out" of many women's lives as I waited for friendships to find me. Sally talks about how she did the same and didn't make the connections till she reached out to others and invited them into her life. I encourage you to read her story and others she has written. She writes as if she is talking straight to you. Amazing.