You Catch Your Roommate in a Steamy Fuck Session

You quietly unlock the door and immediately hear loud moaning from the living room. Mia’s on her knees on the couch, her ass up in the air while her boyfriend pounds her wet pussy from behind. They’re so lost in their fuck that they don’t even notice you. I pull up my skirt and slide my panties down, starting to rub my clit as I feel how soaked I am. What do you do now, Thomas?