Good Name?

So my boyfriend and I have been dating for like a good two months and then some. We've talked about kids and marriage.... I told him I like Cosmo for a boy name, and the baby can go by Mo for short. What do you guys think? He thinks it's a cool unique name, but he's not sure if he wants to name his son that lol.

UPDATE: Damn I feel attacked lol. I did not expect these many responses. 😂😂 as for discussing baby names with my boyfriend or babies in general I think it's a nice conversation to have, considering we both want kids one day. We've known each other way longer than we've been dating, but regardless I dont think that there is a specific time of where we have to discuss these things. Hell there are people getting married/proposed to in less than a month of knowing each other. To each their own. But thank you for the feedback. I really appreciate it. I will scratch that name off the list haha. If I get a dog or something, maybe I can name it that. Idk I just really like the name ladies. I'm not sure why 😅