Mag and Wren still haven't done the deed, but they spend a lot of time together in bed for some reason.
Spoilers ahead...

I lay down next to her. "There's a myriad of reasons I'm not going to kiss you or be anywhere near you without underwear."
She smiled and grinned up at me. "And what are those, great wizard?" God, she was cute as fuck when she was sleepy.
"You're married to my brother."
"Pfffttt." She waved her hand in the air.
"Knight Security has a rule we can't fuck married women."
Her eyes popped fully open. "Really? Why?"
"Holdover from the military. KS doesn't adopt a lot of the military rules, but that one the brothers decided to keep. Have to ask them why, but I've seen some ugly brawls go down when another man's wife is involved."
"What do they do if you break it?"
"I don't know. Probably a fine or you get fired. I ain't gonna find out. The money's too good to blow it on a rule like that. Besides, I don't fuck married women or virgins."
She laughed. "Well, I'm both."
I groaned and rolled away from her. "That you are. Goodnight, my little rebel."
"I'm not a rebel."
"Sure you're not."