From what I can remember:
The mc was almost raped by a guy in High School, after he told him he wasnt ready and wanted to stop. They meet again in their 20s, and the guy helps the MC keep a restaurant open and they fall in love
(I don't know if they actually have sex outside of the bad scene, and I'm not keen on re-reading this one ahaa)
12-ji Kara Hajimaru