Ultimately it was his choice. Maybe there were other issues... maybe he was never devoted to begin with... who knows?
If this happened to my girlfriend though I wouldn't leave her and I'd still be just as affectionate. The thought of her suffering alone with that would break my heart.
It's easy to say that now but things would definitely be different if you were put in that situation. You might not take off like her husband did but you'd definitely not be "just as affectionate", it would be nearly impossible. Your sex life would be over. So what would you do? Cheat on her? Try to turn your relationship into an open one? Or simply go without sex or with very little? Anyone would have an extremely difficult time having sex with someone who was that badly burned.
I can say with 100% certainty that I wouldn't have a problem with it. Even if it meant no or little sex. It would make me sad and would take some getting used to, but you can't just uncheck the soulmate box like that. She would still be the same person inside.
You're lying to yourself but whatever helps you sleep at night. ---
Oda break tracker 2017- 4 (2) Super Mario Maker Profile: 1237-0000-0073-02FE