I laughed so hard with this thread ^^
I don't know if they fall under the already existant categories, but I'll add
-(Females) You're a martial artist, specialized agent, or a ninja? You can easily (and did) outpower and punch/hit/send to hospital the male lead? Are you the jjang of your school and everyone fears you? You're a strong independent female, that doesn't tolerate ignorant rich kids, and teaches them a lesson? Well at some time you'll magically lose your powers(and free will), resulting to the male lead doing whatever he wants. (Like: You would hit him,or leave, or curse him for even talking. But after magically losing your 'powers' he is allowed to curse you, drag you around, and make you feel like **** and you won't say anything. Also, if there's a fight scene,he'll of course outpower you)
-No matter what your profession is, or how wealthy you are, you'll always show up with the latest gadgets and dressed refined. It doesn't matter if you're an athlete. Or if you're a beggar. You'll always wear stylish clothes, which are of course are spotless.
-No matter what the other lead character makes you go through, you'll always chose them. Even if there's a kind, warmhearted person next to you. Even if they were always there for you, and they are far superior than any other in the drama. No. You'll reject them.
-'My mother is in hospital because she bruised her leg, we have to break up.'
The lead characters are able to find a reason to break up, even if everything is perfect.
-THE NOTORIUS PLOTHOLE
Can't find a way to explain how the leads fell in love? No worries ^^ Just don't. It's completely normal for two people who hate each other to go for coffee and end up completely and inseperatedly in love after 2 hours(maximum)together.
-The more you like someone, the more time you can stay staring at them meaningfully doing nothing. Bonus points: If there's rain, snow, a typhoon, a fire, etc
-THE HUG! (OR KISS, in extreme situations ^^)
He hugged you??????? O.O *Emotional music, rotating camera, and different view points of the actors being 'frozen' with their hands around each other* (The same for kiss. Which is (in most cases) a continuous touch-of-the-lips-without-moving-for-5-minutes)