 If you liked
Kareshi Kanojo no Jijou
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 ...then you might like
Otonari no Tenshi-sama ni Itsunomanika Dame Ningen ni Sareteita Ken
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Both are rom-coms where the female main characters are really good at academics and looked at by everyone as the perfect role model students but have different sides in private.
Both have the main characters meeting and beginning to get close early in the series, proceeding to spend a lot of time together.
Both have main characters who have mental trauma (explored more deeply in Kare Kano, especially the manga.)