Pam gets Guy where she wants him (part 12 of "The Guy Saga")

Pam gets Guy where she wants him (part 12 of "The Guy Saga") by billlr

She has him meet her parents. She has him hold her son in his arms. She gets him to have sex with her whenever he wants.

In short, they become boyfriend and girlfriend.

But then she teases him one day and convinces him to hold his sperm for work.
But the sex during work never comes.

Why not?