Yes. 'More Than a Married Couple' manga came to an end. The creators decided it was time to finish the story and leave it on a satisfying note for the readers.
Well, the ending of the manga sees the characters resolve their conflicts and find true love. It ties up loose ends and gives a sense of closure. There are some unexpected twists along the way that keep it interesting.
You can try some popular manga reading websites like MangaDex or MangaReader. They often have a wide range of manga available, including More than a Married Couple.