Am I being petty?

So I was good friends with a girl I used to work with. I left about a year and a half ago, we still talking from time to time. The other day she even said she still missed me etc and then I hear she's getting married. I didn't get invited which bothered me since I thought we were cool like that. I would invite her to my wedding. I got over it though and congratulated her of course. I was only reminded of it today when another girl we worked with said she's going to a wedding on Saturday and I just knew who's wedding it was.

This happened with another friend too. I really thought we were good friends, we spoke a lot and one day mid convo he spoke about his wedding coming up. I was a little hurt I can't lie, again someone I would invite to my wedding. And now I have mentally deleted them from my wedding invite list cos clearly our friendships were one sided.