Here is my not-so-serious-but-genuinely-thought-out "How To" on writing bad romance novels. Enjoy.
1) Have a basic grasp of spelling. It doesn't matter what language it's in, and you're allowed to make up words. Just make sure you can trick the reader in to believing it's a real word by spelling it with confidence.
2) Make sure the over arching plot is interesting, but not too interesting. Your audience didn't pick up your novel expecting it to be the Odyssey.
3) Unless you are a famous, muscle-bound god with flowing golden locks, make sure your pen name is feminine. If the readers see a masculine name, they will assume the plot too intelligently written, and that the nuances of the vagina and female orgasm are lost on men. The point is to put the reader in both the hero and the heroine's shoes.
4) Save your in depth descriptions for character portrayal and the sex scenes. Readers of this genre tend to be drawn to the character relationships. The point is to put your characters into the audience's fantasies, so don't waste time waxing poetic about the setting.
5) When you get to the love making, make sure to emphasize that it's the best sex the heroine has ever had. If she's a virgin, the hero ruins her for any other man. If she isn't, it's the best sex she's ever had and no one in her past compares.
6) Finally and most importantly be creative with your descriptions of body parts. When it comes to the heroine, the most common comparisons are between female body parts and fruit. When it comes to the hero, make sure emphasize how hard his throbbing organ is. Also, his cock is the biggest ever.