its easy for him,he would just rewrite her memories again
Yea, but at a certain point he's bound to change tho... At least I *hope* so.
Like maybe it's useless for me to project my human nature onto a lovecraftian god-like being, but infinite boring couple business is bound to bore him after a long while.
Or by finally commiting to a this stable human relationship it makes him realize the weight and value of a finite life, to the point where he actually might let her go and/or end his own existence with her. (imagine me sweating in a corner as I write this)
Lol thats the thing about him, atleast from the multiple explanations i got from the comments,he would never regret of understand because he possibly cant,he would never die,nor will he ever understand the finite life cuz its easy for him to just go to an alternate timeline and dig her up again,he can simply rewind her memories so his actions doesn't get him consequences,
and so we arrive at the bittersweet fact that all hope is futile in the face of omnipotence ;;
Their current life as a married couple is bound to fall apart too, if you think about it. Even if she's living this ordinary life now, that entails that they grow old together and eventually die. And will "Yohan" really ever let that happen?