interrupted, but only delayed

Devonshire's lips move to meet yours when there's a knock at the door. She stops close enough to feel her breath on your mouth. "Not here," she says quietly. "After work. Your place. I assume you'll be there."

You're speechless, but manage to nod. You don't quite think of Rasa. Love of your life or not, you were mounted by your boss. She gets up and goes to talk to whoever's at your door while you conceal your hardon and go back to your desk. You don't want to bring on more of Devonshire's wrath by saying no to her, do you? How are you ever going to explain this to Rasa? Moreover, what will she even think?