Looking into the myths about it, there were two other women than Persephone but going by the stories, he never cheated on her.
Hades had two main lovers other than his wife: Minthe and Leuce. Unlike his brother Zeus, Hades was not nearly as promiscuous. Both myths have some variations. Minthe was a nymph who was loved by Hades.
Whilst Zeus and Poseidon – Hades' brothers – are widely known for their affairs, Hades remained loyal to Persephone.
Hades loved her, and according to some versions of the myth, she loved him back. In the end, with that sort of love so often taken for granted in Greek mythology, maybe Hades wasn't such a villain after all. His methods were heinous, and no one would blame Persephone for hating her circumstances.
Hades was not perfectly faithful to Persephone and had affairs with Leuce and Minthe (and potentially others). However, he was unusual among the Olympian gods for his few dalliances outside his marriage.
According to mythology, Hades, god of the Underworld, fell in love with beautiful Persephone when he saw her picking flowers one day in a meadow. The god then carried her off in his chariot to live with him in the dark Underworld.
Hades, god of the Underworld, fell in love with Persephone and wanted her as his bride. His brother Zeus consented to the marriage—or at least refused to oppose it. Yet he warned Hades that Demeter would never approve this coupling, for she would not want her daughter spirited off to a sunless world.
Persephone slipped beneath the Earth and Hades stole her to the Underworld where he made her his wife. The myth says that Persephone was very unhappy, but after much time, she came to love the cold-blooded Hades and lived happily with him.
Persephone, Latin Proserpina or Proserpine, in Greek religion, daughter of Zeus, the chief god, and Demeter, the goddess of agriculture; she was the wife of Hades, king of the underworld.
Aphrodite makes Hades fall in love with Persephone, the daughter of Demeter, goddess of the crops. He snatches her while she is picking flowers in a meadow with a nymph and takes her down to the Underworld.
Nonetheless, there was no notable bad-blood between Hades and Persephone In Ancient Greek mythology. Indeed, the Elysian Mysteries (Persephone's main cult) believed that Hades and Persephone had a faithful and a loving marriage with each other. Persephone and Hades never had an “affair” in Ancient Greek mythology.
It is unknown why she left, or if she was successful in her escape, but she did not die. Had she died, she would have returned to the House as he does via the River Styx. Following her departure, Hades forbade all mentions of her in the House, and as such she remains a figure of mystery.
Some Greeks feared her even more than Hades, reportedly using her name to curse enemies. She was in no way weak and was one of the few who personified duality by being able to hold the roles Queen of the Underworld and a Spring Goddess. Part of that was due to Hades supporting her in both roles.
Minthe was a nymph of the river Cocytus who became Hades' mistress. A jealous Persephone trampled the nymph under her foot, transforming her into garden mint in the process. According to a scholiast on Nicander, Hades turned his dead lover into the mint herb after Persephone tore her into pieces for sleeping with him.
Sometime during her marriage, presumably in retaliation, Hera started an on and off affair with Hades that ended around the "80s." It is unknown if Zeus was ever aware of the affair.
Persephone fled from the Underworld after the supposed stillborn birth of her son with Hades. This was then explained as apparently, the Fates prophecized that Hades would never bear an heir. It was because of this prophecy that Zagreus was doomed from his birth.
Emerging from the earth, the god of the underworld and underground forces, Hades, kidnaps his niece, Persephone with whom he is in love. The winged cherubs symbolize Hades's feelings and his victory in this ordeal.
However, Persephone, too, fell dearly in love with Adonis and refused to give him up when Aphrodite came for him. There was a bitter argument and Zeus had to intervene to prevent a disastrous argument between the two.
Hades became the ruler of the Underworld. Hades was married to his niece, Persephone, whom he abducted [See Demeter].
Hades was determined to make Persephone love him and gave her many gifts and riches. She hated him for snatching her away from her mother until he asked the dead gardeners of the Underworld to make a field of her favorite plants.
In the Underworld, Persephone had grown to love Hades, who treated her with compassion and loved her as his Queen. As she would have up in Olympus, she remained eternally beautiful in the Underworld. Hades admired her kind and nurturing nature.
ZEUS LOVES : PERSEPHONE. In the Orphic myths, the maiden goddess Persephone was seduced by Zeus in the guise of a serpent. She bore him a son, the godling Zagreus, who, when Zeus placed him upon the throne of heaven, was attacked and dismembered by the Titanes.
Hades is jealous about his brothers successfulness in their lives like how us humans are with our siblings. Overall, Hades was always envious of his brothers because of their accomplishments compared to his unluckiness.
However, in Nonnus' account of the birth of first-born Dionysus, Zeus is said to have slept with Persephone, “the consort of the blackrobed king of the underworld.”
Persephone was ruthless to those who had wronged her
In the myth of Adonis, both Persephone and Aphrodite had fallen in love with the mortal man. Zeus order was to split his time between the two goddesses, but when Adonis decided that he did not wish to return to the Underworld, Persephone sent a wild boar to kill him.