Ok. So call me crazy, but what really gets me going, makes me grin like the joker, and causes me to squeal at my computer screen at three in the morning is when male leads in a drama butt heads when they vie for the affections of a female lead. Sometimes it is even more effective when there are more than two fatally attractive men duking and pursuing the girl, etc. Bromance is always a plus!  It doesn't even have to be a masterpiece (i.e. Boys over Flowers, Mary Stayed Out All Night, Heirs,) Personally I strongly prefer romantic comedy. Can anyone help? Thank you in advance!

Ho goo's love, lots of funny scenes
You can try Heart to Heart or Protect the Boss, the later has more rivalry, but both of them are very good ^^