I was watching Good Morning Call - Our Campus Days and The male lead's friend befriends the female lead and begins to sway her a bit. Not that she cheats or anything, but she does begin to feel something. In the end she rejects the other guy because she loves the main guy.

Are there any like this? The male lead and female lead are together. The 2nd male lead becomes close to her and she starts to feel something for the 2nd male lead. Not to the point where she cheats or anything. Maybe the 2nd male lead catches her off guard and kisses her. I do want it to cause problems for the lead's relationship. Like the male lead is jealous because of her relationship with this other guy. Anything like that?

Maybe Boys Over Flowers if you haven't seen it yet?

 Anajwo:

Maybe Boys Over Flowers if you haven't seen it yet?

I mean yeah sorta. She was unsure of what she was feeling for the main guy when she falls for the 2nd male lead.