School 2013 featuring Lee Jongsuk is quite good.

i love this movie, the title is Girl by Girl or girl x girl..
the title can be misleading but its not a lesbian movie.. it's about a nerd girl and a gangster girl fall in love with a same guy... the movie is great for friendship and teen love.. and the hot guy looks a lot like Kim Jonghyun (when shinee first debut) lol..

Love Rain
Lie To Me

That's all i can think of right now, I'll tell you more when I remember :)

hurm.. idk if this can helpu or not.. but here i have some story if u want to wqtch them..
- Boys over flower(gu hye sun, lee minho,kimhyun joong, kimbum,kim jun and other...)
- to the beautiful u (shinee minho, fx sulli, lee hyun woo and others...)

i think these two stories fit your explaination well... so i hope this willbe helpful....