Naming issues

Jasmine • 17 and pregnant! Still graduating and going to college! I can't wait for my baby boy to get here<3
I picked up Ryder Dane for my boy name and my boyfriends cousin is 3 months behind me and she wants to name her boy Ryder to and she said I'm not allowed since she had it picked out before she was pregnant. Well so have I. What would you do?