Reading these books were all painful experiences. I advise you to avoid them at all costs, unless you like to read things that will give you fodder for enough criticism to fill a blog.
Notice that many of the worst novels are by some of the authors who have written my favorite novels. Proof in print that while not everyone can write Gems, any author can produce crap. Also, I fully expect that this list of Dregs will end up considerably longer than the list of Gems.
Because You're Mine, by Lisa Kleypas
It's In His Kiss, by Julia Quinn
Only in Your Arms, by Lisa Kleypas
The Finer Things, by Brenda Joyce
Nights in Rodanthe, by Nicholas Sparks (not technically a romance novel, though)