We live on 10 acres, and have a 800ft driveway. H comes home from work our 7 mo. dog runs under the truck, and is run over. The dog never goes near the vehicles, but for some reason ran under the truck, and is now dead. H never saw the dog, clearly an accident. H is an animal lover. He would never hurt an animal, and has been known to punch someone who has abused an animal.
I see him out the window, and know immediately something is wrong. I grab my coat, and go outside. He is very upset, mad at himself, crying. We bury the dog, and go inside.
I try consoling him, holding him, saying it isn't his fault. He rejects me. He calls his mom

wth! He's talking to his mom about it. She interupts him to talk about her favorite subject, herself. She tells him what a bad day she had, blah blah.
He gets off phone, goes to take a shower. Never says another word to me about what happened. Won't discuss it, he goes to bed early.
I'm hurt. This is a big problem in our marriage. He turns to his mom, instead of me for comfort, and understanding. Problem is she rejects him. When I reach out to give him the comfort, and want the emotional bond between H/W I get rejected, and made to feel as if my need/want is unreasonable.
Anybody have words of wisdom? Why reject me who wants to give him comfort, but will look to someone who denies him the comfort?

I know this goes back to his childhood. I have no clue, maybe someone has has experience in this behavior.