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'd understand that if you still 
remembered the conquest,
¡Lo entendería si recordaras la conquista,
¡Lo entendería si recordaras la conquista,
Eu entenderia se você ainda
 se lembrasse da conquista,