Okay Spoilers here. I found it super weird that Darkstalker just turned evil so fast but he didn't let his friends know, instead he enchanted his lover and tried to do the same with his best friend. Talk about evil. I really hope Foeslayer gets control over him in the newest book Talons of Power, I highly doubt it but still it's a shot. It would make sense if he did stay with her since Whiteout mentioned that one of them would see her again.