My boyfriend loves a name I hate.

So, my boyfriend LOVES a name, that I hate. He uses it when referring to the baby and it is starting to drive me crazy. It's not a bad name on it's own, but I wouldnt name my son this name ever. It's the name of his favorite video game character, he has been using the name as his gamertag since I met him and he said he has always wanted to name his son this name. I told him off the bat it wont fly, but he still thinks he can change my mind. I have a handful of names I love and he wont even humor another name. I'm not wanting to hurt his feelings, but he shut down a girl name that I have always wanted to name a daughter and I respected that. Just not sure how to get him to let it go. I'm not going to be guilted into giving my child a name that I cant stand calling them. This is my 5th pregnancy and the only one that is going well, this is the last thing I want to be stressed about, but it is stressing me out. 😓