that Mary and Addie are already a couple. At least a pseudo one. Like, c'mon, she wouldn't be showing off her boobs to him if they were simple master and servant. They have the subtle flirting going on, and they're already the closest anyone could be.
I also have as a head canon for now that ppl at their school see them as a couple, hehe.
bitch, don't come with a ''he has been hurt before, hence he is now a psycho'' bullshit with me