Zutto Anata ga Sukidatta (1992)

Ten years back, Miwa's friend committed suicide because she couldn't stand that Yosuke, the one she loved, got along so well with Miwa instead of her. The suicide caused the entire town to put the blame on the couple, thus forcing them to break off. Ten years later, Miwa and Yosuke happen to meet again. Though the love between them still exists, the reality makes their being together impossible. Miwa is getting married soon, and Yosuke has then established a new relationship with another girl, Ritsuko. Unfortunately, Miwa's marriage is a failure, and yet she couldn't turn back till one day ... but it ends up hurting somebody again.