Media Naranja: My Other Half

"This feels good..." That act should have brought me nothing but pain, and yet... I felt pleasure. Three days before her wedding, Saya winds up coming face-to-face with the sight of her fiancé cheating on her. "You're such a clean freak, and you're frigid, so..." - these harsh words are thrown at her, and her engagement is called off as well. Still nursing her wounds, Saya turns to a solo trip to Okinawa in hopes of being reborn as a new her. And there, while taking a diving lesson, she meets the man of her destiny... "Even if it's only for the rest of this trip, that's fine. I want you to be my girlfriend." It's the heartrending romance of a frigid office worker and a wealthy heir who has never been in love.

(Source: MangaPlaza)