The thought that she did an excellent job hiding it crossed his mind. But based on her circumstances then, he found it strange. Yuhi did not want to research her. He felt like he was invading her privacy too much. The only reason why he knew this was because of Tsueno Mamoru, Mamoru was the one who told her this. Sumire dated Mamoru last year in August till the end of December, and then the accident happened. Before then, she apparently saw somebody else.
A small diagram formed in his head.
December 2013- June 2014 -- ?August 2014 - Started dating Mamoru (16)December 2014- Accident
When Sumire was fifteen years old, she dated somebody for a good half-year.But who?
Sumire sighed and pulled away from him. "Do you really want me to tell you?"
This was the first time he ever saw her look so troubled. To say he wasn't curious was one thing.