Okay, yeah, Raidou needs to commit to this wife. She clearly still cares. His mindset is so damn warped that he thinks she's just a bloodsucking vampire and that he deserves someone else, probably just because he can't handle the responsibilities of being a husband and father, and being tied down like that, even though that's his duty and honor as a man of a household.
He's too damn immature, despite his age.