Many men have commitment resistance, but if you know — it never needs to happen again in your relationship.
Costs of boundaries varies, but worst case scenario you lose the relationship.
He Doesn't Want Other People To Know That He Likes You A man might want to distance himself from you if he doesn't want other people to find out that he likes you.
Why do women act so cold and distant towards you all of a sudden? On a primal level, this helps him to secure you as a mate, and it leads, hopefully, to procreation and babies.