I assume there are others here with the ability to take their memories. It's worth looking into any enemies they may have, or just one if the other was affected as some sort of punishment seeing as the two are dating.

He's been quieter, I'm sure that will change soon enough. Thanks Hakuba, we'll see. Maybe your expertise can help figure out what's going on- not like the cops here will do anything. If I find something I may run it by you.