It's the night before the Mai High Festival.  Keima and Chihiro are alone on the roof of the school.  Chihiro seems confused by Keima's behavior, but he continues with his conquest.  But as Keima makes his move, Chihiro says something unexpected.
I thought you went out with Chihiro 
because you knew how she felt.
Pensé que saliste con Chihiro 
porque sabías cómo se sentía.
Pensaba que saliste con Chihiro 
porque sabías cómo se sentía.
Pensei que você tinha saído com a Chihiro
 porque sabia como ela se sentia.