when he was on a business trip he met this girl at a bar (you). They got very drunk and he gave her the best night of her life in bed. But the next morning, he was gone. he left a note for her that read:

"Something came up. Had to leave."

She never heard from him ever again. Until years later after she gave birth to his child when she was walking by herself and he saw him again... with his arm around another girl