"step out on someone" meaning in English

{
  "forms": [
    {
      "form": "steps out on someone",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "stepping out on someone",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "stepped out on someone",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "stepped out on someone",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "step out on someone (third-person singular simple present steps out on someone, present participle stepping out on someone, simple past and past participle stepped out on someone)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English phrasal verbs with particle (on)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English phrasal verbs with particle (out)",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2020, Danesha Little, Getting Even",
          "text": "I could tell from the way she acted that night that she had never stepped out on her man.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To cheat on someone; to be unfaithful to a lover."
      ],
      "id": "en-step_out_on_someone-en-verb-SiorCrey",
      "links": [
        [
          "cheat",
          "cheat"
        ],
        [
          "unfaithful",
          "unfaithful"
        ],
        [
          "lover",
          "lover"
        ]
      ],
      "raw_glosses": [
        "(slang) To cheat on someone; to be unfaithful to a lover."
      ],
      "tags": [
        "slang"
      ],
      "translations": [
        {
          "code": "de",
          "lang": "German",
          "sense": "to cheat on someone; to be unfaithful to a lover",
          "word": "jemanden betrügen"
        }
      ]
    }
  ],
  "word": "step out on someone"
}

{
  "forms": [
    {
      "form": "steps out on someone",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "stepping out on someone",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "stepped out on someone",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "stepped out on someone",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "step out on someone (third-person singular simple present steps out on someone, present participle stepping out on someone, simple past and past participle stepped out on someone)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs with particle (on)",
        "English phrasal verbs with particle (out)",
        "English slang",
        "English terms with quotations",
        "English verbs",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "2020, Danesha Little, Getting Even",
          "text": "I could tell from the way she acted that night that she had never stepped out on her man.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To cheat on someone; to be unfaithful to a lover."
      ],
      "links": [
        [
          "cheat",
          "cheat"
        ],
        [
          "unfaithful",
          "unfaithful"
        ],
        [
          "lover",
          "lover"
        ]
      ],
      "raw_glosses": [
        "(slang) To cheat on someone; to be unfaithful to a lover."
      ],
      "tags": [
        "slang"
      ]
    }
  ],
  "translations": [
    {
      "code": "de",
      "lang": "German",
      "sense": "to cheat on someone; to be unfaithful to a lover",
      "word": "jemanden betrügen"
    }
  ],
  "word": "step out on someone"
}