Shinai naru mono e (1992)

Description:

Even after marriage, Nagiko and Nozomu still spend time dating each other. They seem to be a happy couple, but right behind their backs, each has his/her own secret meetings with his/her ex-lover. Such secrets don't hold long, and get exposed soon. But, it's only then that they realise they in fact love each other very much and are real partners.