I cant get my hubby to help with baby girl names!?

we decided on a boy name, that we both loved but now he is changing his mind about it, but that doesn't matter because im 90% sure im having a girl. i knew i was having a boy before i was told when i was pregnant with my son and i know im having a girl now, i know hes not crazy about having a girl i think hes afraid of diaper changes and he doesn't know how to bond with a girl, hes always wrestling with my son and playing with action figures.....anyways every time i suggest a name he says no and comes up with a reason for not liking it, i need help how do i get him to come up with names he likes instead of just shooting down everyone that i suggest