Definition of be an item in English:

be an item

phrase

informal
  • (of a couple) be involved in an established romantic or sexual relationship.

    • ‘They co-starred in Beatty's 1991 film Bugsy, and by the time shooting was over, they were an item.’
    • ‘Less than twenty-four hours later, we were an item and we haven't looked back since.’
    • ‘She didn't realise that Hayley and Kim were an item - something that Hayley hurriedly denies.’
    • ‘A few days ago, Orlaith thought that Craig and Anthony were an item and was shocked to discover that wasn't the case.’
    • ‘The couple, who've been an item for 12 years, have their musical roots in Long Island.’
    • ‘The novelty of a daily fix of happy sun-tanned people was spiced up by the rumours that Kylie and Donovan were an item off screen as well as on.’
    • ‘Not, of course, that Jack and Kim were an item, she insists: ‘That's the most untrue thing that I've ever heard in my life.’’
    • ‘We were an item from that day on, but because we were living in different cities it started quite casually - seeing each other once or twice a week.’
    • ‘We were an item but it wasn't an all-consuming relationship and some people may have wondered how interested he really was.’
    • ‘They were an item for a time, but she quickly grew tired of his philandering.’