Her perfume...he smelled it. He could feel it wash over him, like a veil of kindness, comfort and safety. That perfume that she always wore, no matter what. That night he discovered he would never be able to smell it again. The acrid and heavy smell that emanated from her was so foreign he was disgusted. That wasn't her, she didn't smell like that. He didn't like it.
"I love your perfume" the other one said.
So that was it. The perfume was for him. She had changed and she would never come back. Because he had pushed her away.