Would you be pissed

Would you be pissed if the father of your child (and ex), went off and had another son and used one of the names that you thought of for your child when you two were together?

I had a really hard time picking out boys names and when I found the name Greyson I was deadset on naming my son that, but his father absolutely hated the name at the time so I named him something else. Well two years later he has another boy with someone else and the kids middle name is Greyson, spelled the same way I wanted it spelled and everything. Honestly I'm a little salty over it.😂😐