Her Husband Is Gay

He comes from a poor family and is gay. He originally wanted to come out as gay, but due to family changes, he could only find a girlfriend to go home and lie to his parents. She is a white-collar elite, independent, has no hope in love, doesn't mind getting married, and doesn't mind doing a favor to the legendary top student. The heroine and the hero have been together for many years, and they fall in love with each other. The academic/strong/gentle and passionate male protagonist, the rational/brave/nervous female protagonist. Purpose: Love is companionship