For some reason I can't accept love as an excuse, because I'm not sure he really loves her and he knows what love is.
Last week's ep even hinted at some kind of egoïstical problem, even if maybe just an exagerated reaction to Emilia's harsh words.
Some of the reactions I read here also pointed to some kind of insanity.
But he might just be on edge, or near breaking, after experiencing death so many times, and in many forms.
I'm still wondering wether I do not like those eps is because the delivery is bad, or because the subject is so negative I'd rather watch something else... Like fanservice