Im having trouble with my boyfriend on naming our child. So can someone help?

My boyfriend wants us to name out kid Sephiroth. I'm not sure if i should or not, hes not the type to communicate and come up with an agreement and i like the name Wyatt and he said if it my son cant be names Sephiroth then hell have nothing to do with his baby. So what do i do? Noone likes the name and i fear my son will get picked on, but i dont want to hurt his feelings cause is REALLY set on this name and has been before i met him.