At first he played it off, trying to convince himself that it must have been a coincidence.
He quickly navigated back to her profile page and stared more intently at her profile picture.
He was pretty shocked that she was even on this site, since it was well known for being a place people came for easy sex and he had always thought she was kind of conservative. He pulled a feeble excuse out of thin air as he got ready to make his escape.
The wheels in his brain kept turning and he realized that if she was telling the truth, then she must have known who he was before she messaged him.
They had been friends since they were in diapers, even their moms were friends.
He was the one person that he could tell anything to.
She wasn't just familiar; she was his best friends mom...
Now a good friend would have closed the app right then and there, they would have left it at that, no harm done.