in bed with

English

Sharing one's bed with.
- 2020 November 3, Stuart Jeffries, quoting Tsai Chin, “Tsai Chin: 'What was it like being in bed with Sean Connery? Fine'”, in The Guardian‎^[1]:
  People also ask me what was it like being in bed with Sean Connery. I said, ‘Fine.’
(figuratively) Engaging in a close mutually beneficial relationship, especially secretly and illicitly.
Synonym: in cahoots with

He's not for the company; he's in bed with the investment bankers.
- 2004 March 3, Paul Foot, “In bed with the Tories”, in The Guardian‎^[2]:
  On the central issue in foreign affairs—the Iraq war—these ministers have been in bed with the Tories from the outset.

sharing one's bed with

engaging in dubious relationship