I have always been a 'fag hag' lol! My best friend and I were like siblings (he is an only child and he develops sibling like friendships), TBH I lost interest in most of my old friends after highschool anyway except for two of my best gay mates AND MY dp who is a good friend. I had my DD when I was 20 (I am now 24) My two best mates moved 1000's of km's away and we sort of just drifted apart, it had nothing to do with my daughter, they both love my daughter, we are all in very different places now, our friendship served a purpose for all of us and it ran it's course. We still love chatting every now and then and I visit them every few years, I love them both like family.
I take a long time to make good friends because I get severely anxious. I just kept trying different parent groups and social circles until I finally found one I love (it took a while). I have changed alot since my DD was born, and even since she turned 3, but I think a lot of that is just down to getting older as well. I still like to party occasionally bit I also love to go camping, hiking with and on picnics with other families.
I think for me the first 2 years of DD's life I was adjusting from a carefree life to family life and it took time to develop good friendships with new people who I clicked with.