Not saying it’s a deal breaker if he actually wants kids still, but it definitely will be difficult considering I do not want kids for many reasons.

Not a dealbreaker?

So, what's your plan, if your boyfriend-husband-to-be decides he wants kids? You remain childless until he can't anymore? Good compromise, huh? You bear his child as soon as possible, but put the baby in another home for a year, then take them on for another year and keep on alternating one year of """childfreedom""" and one year of parenting? You have half a baby? A little bit of what you want, a little bit of what he wants?

Or do you mean "not a dealbreaker" as in "I'll ignore the elephant in the room until one of us explodes and then we'll see who caves in first"?