Manga Addict's manga / #misfortune with love(1)

This Time I Will Definitely Be Happy

Complete | Fujimaru mamenosuke / saiki rico | 2000 released

The story is actually quite good but one thing that i can't get is how the female lead cannot move on despite saying that she would... imagine what would have happened if Graham didn't come back and married another(!?) I feel that it would be too foolish of her to just keep waiting and perhaps die alone eventually