Your marriage has no delineations between you, him, marriage and work...it's all one. Marriage was pushed to the rear as you focused on work...you, became overly confident, self-imposed, opinionated...you bulldozed H's ideas, thoughts, opinions...He sought refuge in pulling away from you...that was your trigger.
Your fear is embedded in your psyche...it will take your thera- pist to help you see it...
You should be glad he left home - flight - instead of staying and abusing you verbally - fight - like Sol's wife does.
Furthermore, it has to do with your mother, no blame on anyone's part...yours or hers...millions of people have this.