He could have easily prevented her from being a demon worshiper, but suddenly, he's all like "maybe I shouldn't go and meet with the person who I've dedicated so many years of my life to, just in case she gets killed in a few years due to a completely preventable incident"
Well, he’s learning from his past mistakes and trying to figure out what’s best. This is new to him, he’s never awoken with a direct change to his circumstances.
He could have easily prevented her from being a demon worshiper, but suddenly, he's all like "maybe I shouldn't go and meet with the person who I've dedicated so many years of my life to, just in case she gets killed in a few years due to a completely preventable incident"