Plan how to reverse the situation
From Create Your Own Story
"What happens when my roommate gets back?" you ask.
"Oh, he won't be getting back," Emily smirks. "He's now, unofficially, rooming with Cynthia. And he thinks you and I made a mutual decision for me to move in here."
You see the key to the collar on the bedside table, but it's too far away for you to reach it. "Enough talk," Emily says, straddling you and reaching for your dick.