He only likes one name and I HATE it.

We don't know what sex the baby is yet but last night my SO said "just so you know, the only girl name I like is Isabelle " and I've told him so many times I hate it. Also my name is Isabella so I think it's super weird to have a child with almost the same name, not that it's going to happen. Have any of you dealt with your partner only liking one name that you hate? What did you do?