Why is it that all my old friends want to be friends with me again all of a sudden now that I have a…

Why is it that all my old friends want to be friends with me again all of a sudden now that I have a baby🙄 this girl I used to hang out with before I got pregnant messaged me today saying she missed me. This is the second friend that has came to me wanting to be friends again after I had a baby. I don’t like this girl at all and I want nothing to do with her. She’s nothing but trouble and she’s not a good person for me or my son to be around. So annoyed just the thought of her makes me so mad, she won’t stop messaging me saying she misses me. Leave me alone!!