Baby Name (kind of long)

Soo is this petty, I as a female have always thought of names for the kids I've wanted to have. I've been trying since October of last year, around that time my boyfriend cousin was trying also. Fast forward she gets pregnant first ( of course lol), but she is about to find out what she is having. We sit and have a convo about the names she has if it's a boy or girl, of course me being me not thinking I tell her the names I want my kids to have when I have them. Well you probably know where this goes after that, she goes to find out what she having. She announced it on fb, I'm scrolling and all of sudden I see the name I told her was gone be my son name. So I text her and say our kids are gone have the same name because she knew that was the name I chose, so of course she gets mad and idgaf. All in all is it petty I want to make her feel like I did, and say my baby name gone be that until birth then actually say what my baby name gone be if it's a boy at the hospital?