Shinsotsu Sex Friend ni Nigete mo Ii desu ka?

At 32, Yurika is devastated after discovering that her nearly five-year relationship was, in fact, an affair. Forced to transfer, her new coworker drags her to a welcome party where she catches the eye of a college student sitting across them. Feeling distraught, the calm and cool, Aoi, whisks her away. Despite being ten years younger than her, she gives in to a night of passion with him. Several months later, who walks in but the very man she thought she'd never meet again, Aoi. Will their relationship blossom or will it remain purely friends with benefits? (Source: MangaPlaza)