Option 2

“Great thats settled then, see you tomorrow” Frank says as he walks out.

Kate Thinks to herself “tomorrow? Fuck didnt realise it was so soon, i’ll have to go once until i can try figure out a way around it”.

Frank heads down to leave, with a rock hard cock knowing he gets his own way with his best mates fit sister! Finally, he is going to get to not only see her body but do what he wants with it!

On his way downstairs, he stops, thinking he needs to get rid of his boner before the drive home... he couldnt really go back up and do something with her as he’s gotta wait until tomorrow.

After thinking what he can do, he sneaks back upstairs, into her room as she’s still in the bath, he picks up her thong which is laid out ready for when shes out, and he wanks until he blows his big load in them, laying them back down, he leaves and waits for tomorrow...