My best friend of forever (since around age 5) is a bit of a party animal, I guess I was too up until around age 24.
Now at almost 28 I'm married, have a house, a good job and a baby on the way. By no means is my position in life better (in fact sometimes I'm jealous!) but just different.
I definitely think she is struggling a bit with being super supportive or knowing what to be like (she doesn't have a like for children). We still hang out, but our friendship has definitely changed, which makes me sad. I don't want to lose my close friends and just be friends with other mums because they are mums.

Did you manage to stay friends with childless or partying friends?