"step out on someone" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
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      "examples": [
        {
          "ref": "1988 February 7, Elizabeth Pincus, “A Romp Through Lavender Land”, in Gay Community News, volume 15, number 29, page 7:",
          "text": "Nikki, who is stepping out on her main squeeze Lee,",
          "type": "quote"
        },
        {
          "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": "quote"
        }
      ],
      "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": [
        "(euphemistic) To cheat on someone; to be unfaithful to a lover."
      ],
      "tags": [
        "euphemistic"
      ],
      "translations": [
        {
          "code": "de",
          "lang": "German",
          "sense": "to cheat on someone; to be unfaithful to a lover",
          "word": "jemanden betrügen"
        }
      ]
    }
  ],
  "word": "step out on someone"
}

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  "lang_code": "en",
  "pos": "verb",
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      "examples": [
        {
          "ref": "1988 February 7, Elizabeth Pincus, “A Romp Through Lavender Land”, in Gay Community News, volume 15, number 29, page 7:",
          "text": "Nikki, who is stepping out on her main squeeze Lee,",
          "type": "quote"
        },
        {
          "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.",
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        }
      ],
      "glosses": [
        "To cheat on someone; to be unfaithful to a lover."
      ],
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          "cheat",
          "cheat"
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          "unfaithful",
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      "raw_glosses": [
        "(euphemistic) To cheat on someone; to be unfaithful to a lover."
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  "translations": [
    {
      "code": "de",
      "lang": "German",
      "sense": "to cheat on someone; to be unfaithful to a lover",
      "word": "jemanden betrügen"
    }
  ],
  "word": "step out on someone"
}