I could have told you this, I was an editor at Harlequin for 7 years, but a couple of people 'studied' Harlequins and discovered the top words used in Harlequin books. If you want a good chance at getting published, try throwing one or many of these words around:
- cowboy
- rancher
- prince
- marriage
- wedding
- pregnant
- babies
- Texas (huge seller!!)
- secret