Girlfriends

John already knew he'd be a single father to these three, so why not spruce things up.

He would give them girlfriends with personalities opposite to theirs, as a fun dynamic.

Harley, the energetic athlete, would get a gamer girl who spent 90% of their time gaming and streaming on Twitch.

Willow the nerd would get a literal cavewoman.

And the pink-loving, bimbo Lucy would get a goth girl.

John selected singer Selena Gomez as Harley's gamer girlfriend, named Mona, model Gigi Hadid as Willow's cavewoman girlfriend, named Ugga, and actress Jennifer Lawrence as Lucy's goth girlfriend, named Blair.

Finally, he hit exagerrate, so that the girlfriends would be sexualized charactures of their personalities, and set it up so that his daughters would meet their soulmates in a rom-com sort of way. Of course, they'd be madly in love and never break up, and for added fun, he'd make his daughters try to sneak their girlfriends into the house without his knowledge.