Most Helpful Guy
Because romance books and movies have one common problem.
It is very difficult to make a realistic romantic movie and keep it interesting, simply because romantic stories are boring. Yes, they are boring, except for those who live this romance. So what the writers and producers give us is always an unrealistic story, full of exaggerations where the whole universe plots to force our two love birds to break up.
Take for example The Notebook, a girls favourite. It's a movie that gives us literally one cliche after the other.
You have Noah and Allie.
First obstacle in their relationship: Noah is poor, Allie is rich with many riches.
Second obstacle: Allies parents don't like proletarians, so they want them to break up.
Third obstacle: Allie must leave the city for her studies.
Fourth obstacle: Noah goes to war.
Fifth obstacle: Allie works as a Red Cross nurse and meets someone else.
And with allthe above we have a Noah that black mails Allie to go out with him by... committing suicide in the fun park? A poor Noah who works as a builder but writes oetry and this with the best handwriting in the world. "Let's dance on the street" bullshit. A sex scene where Allie begins to murmur after the 2nd thrust and turns Noah off (in a romantic movie!). "Say Im a bird!" - "You're a bird"( apparently in this movie you always have to order your partner to do things ´to show your love), Allie marries someone else and then cheats on a really nice guy (what a good example for young girls) and then Noah as a true psycho builds a house exactly like Allie imagined it even though he hasn't seen her in months, maybe years I dont know. The guy belongs to a sanitarium!
Then you say how beautifully romantic it is and have the nerve to say how women are more mature than men. Give me a break.
To answer your update question, I will watch a romantic movie with my girl only when it is one worth the time and it's not really difficult to distinguish a girl's romantic movie from one that aims at all audiences. The only thing to missing in a girl's movie is the chocolate and tampn inside the case of the dvd to assure you what you're about to watch.1
Most Helpful Girl
I'm a girl and I rarely like anything thats central focus is strictly romance. Tends to read as too unrealistic and cheesy.
Old school Star Trek had the right idea about romance; intertwine it with a more dimensional story - keeps you guessing.2