Right now I'm reading Driven, one of the books published by Shomi. It has some element of romance, but it's in the background so far. I haven't gotten to the others yet, but I think one of the requirements is romance.
Come to think of it, my bookmark says, Shomi the future of Romance. I think most category fiction, that I know of, is romance driven and the plot (murder, suspense, etc) is secondary.