Mia and Lilly help with sexual frustration

Mia Taylor's masturbating in the shower when she finds her stepbrother Alex spying on her. She's angry at him and then Lilly Hall interrupts. Alex has to focus on his studies and Mia isn't helping. If he's distracted and sexually frustrated she should support him! How? Well, by giving him some sexual release and fuck him of course! Lilly even joins in but afterwards it's back to studying for Alex.