My first full-on real-life romance novel was Shanna by Kathleen Woodiwiss. Naturally, it’s on my keeper shelf right next to The Wolf and the Dove. I have the ones with the original covers, though they are far from mint. The namby pamby covers on the ones with the links are meh. Unlike most of my contemporaries whose first (or close to it) romance experience was Woodiwiss, mine wasn’t with The Flame and the Flower or Ashes in the Wind, neither of which I cared for.
But she’s not my guilty pleasure.
It’s Carole Mortimer of Harlequin Presents circa 1979 through, oh, I guess around 1986.