roomie doesn't want this to end badly enough. If he really did he has three options.

1. Tell dad enough is enough and ask for the key
2. Compromise. Tell dad he can come once a week at a time agreed upon by all.
3. If he lacks the cojones for either of those, then the passive-aggressive option is to keep the palce so clean dad has nothing to do

If he can't manage at least option 3 then I call BS on his wishing dad would stop.