As long as he keeps manipulation active, she won't trip his loner skill. A win/win, since she doesn't actually want to leave him.
I'm just glad there's an actual reason for her to like him, unlike so many other harem types.
Usually it goes "I'm Strong!" instantly to "Let's make babies" and then cockblocked by their own morals and/or denseness to "You can stick around and lust after me, but I won't touch you"
MC's actually touching their harem is a pretty recent change, I think.