"You don't need to apologize to me for my own actions." Sebastian doesn't recoil from her touch, but he isn't about to take comfort from it either. "I've been told I have a talent for doing the necessary thing; which I did then, and which I will do now by apologizing for my own poor behaviour and leaving you to your meal. If you'll excuse me."

Provided she doesn't stop him, Sebastian will find their waiter, pay for both meals, and leave.