The desire to have your own children, sounds like it will be huge decision for you, as far as what to do with this relationship.

Wanting to have children, can be huge for some.

When you mention, you know why he behaves the way he does, leaves me wondering, what type of behavior?

What a rash decision to get a vasectomy, because his gf/wife cheated. Sounds like he was young, doing that, too??