Baby girl name debate.....

Cass • Baby girl- 2yo Angel babies x 2

My partner and I both decided on a name we love, Billie Jackson. It happened so easily, we were both so happy with our choice- I should’ve known the other shoe would drop!

He told his brother the name we decided on and his brother made a joke about us calling our girl BJ... now my partner doesn’t want to use the name because of what her initials would be and that it’s not appropriate. I love the name and the initials don’t bother me. I don’t know what to do, I don’t want to fight over it but does anyone else think my other half is overreacting just a little here!?