When a character flip flops so rapidly just to make sure (typically) she gets with the main character, who will usually be the prince, or whatever character essentially stalked her, invaded her business, pushed himself into her life "romantically". I find it rare nowadays to have a character, especially in this new rebirth trend going on, who will say "I'm not getting involved" and gasp, maintains that position for the entire time.
How many people could get burnt on a stake, or beheaded, or thrown into a dungeon, and not have this mad need for revenge against the perpetrator? Maybe that's just my personality, but I sure as heck would never fall in love or go anywhere near someone who caused me such pain before.