Boku to Watashi no Henai Jijou

From Operation Boredom:

Jin is a rock artist in the making, and in a relationship with Tama, a wanna-be bread maker. However, as Jin’s popularity grows, he feels he doesn’t have enough time for Tama, and breaks up with her. Tama agrees to call it off… A little too easily. The two go off their seperate ways and decide to meet new people, but is their relationship really truly over? Watch their piping hot love slowly unfold!