Feeling Guilty for being Happy💜😕

so last Saturday I went to a friend's party and had one to many and this guy kept hitting on me well I got rescued by a friend and his friend (his friend also my best friends ex bf) I ended up going to an after party not so much but watched a movie at my friends house now I live in a small ass town so the pickings are slim well she just got married and I've been talking to her ex and she lives 2 hours away and I've been racking my head trying to tell her even though she just got married and it shouldn't bug her she's about to have a baby with the guy but I still feel like I need to tell her and but I don't knhow how i know it sounds childish but I don't now to do this

Edit I get the girl code bs but there comes a time in life that you grow up she's married. Edit she did the same exact thing to someone else that we were friends with in high school so she's been in my shoes. Edit She gave me her blessing she changed attitude about we think it's her hormone but we ended up talking and realise how childish we were being