I have never wanted children and thought for years it would change but nope. I told my now husband before we even when on our first date that I was 80% no kids and 20% maybe but its most likely going to be no. He felt the same way so that helped and now we have been together for 6 years and going on our second married anniversary in August.
I think taking some time to figure out what you want is what matters first is good and when you are sure then see what he thinks is a good way to figure stuff out.
Goodluck
Grace