Peter was at work, but his mind was elsewhere. Before Olivia, anytime he would bring a woman back to his apartment and fall asleep prior to calling them a cab, he would secretly pray that they would leave in the middle of the night. At that time, he thought it would be less awkward, but now that he was experiencing it, he hated the feeling.
Peter had slept with women he liked as much as he liked Olivia, but none of them sparked the same desire she had ignited; it was not love, but a need to protect. For whatever reason, Olivia had chosen to give her first time to him, and he had taken it without second thought, but even that was not why he was feeling bitter.