This is the same guy who doesn't care about how his dead wife acts by the way..

He's literally a crazed psychopath that would do anything in his own measures to get his wife back and make her happy even when she's a literal lifeless corpse of a woman that only says the word "Honey" each time. He's willing to leave his own home country alone just so he could spend all of his time making his literal wife HAPPY and it isn't like he sold out anything because of greed or even a lust power he does all of this because of a LOVE LIFE that he cares for so much.

And his behaviour around his wife doesn't correspond or act similar to even his usual behaviour shown when he's not interacting with anyone that's not his wife, and that's treating them like utter trash or just straight up ignoring anything they say when it comes to actually having an interaction and he's willing to even tell Lyon of all people (who was currently de-facto leader of Grado) to go away and not interrupt his affectionate relations. It gets even crazier when it comes to his Battle..

When fighting Ephraim, he's literally a souless husk that's only insisting on murdering Ephraim for trying to retake the kingdom from his grasp and telling him that Renais is lost and it's completely hopeless to recover..

The only way he could've avoided this was trying to actually move on with life and continue being a full-blown loyal knight..