go to bed with someone
成語所屬單字bed
go to bed with someone — 慣用語
1. to have sex with another person, usually one you are not married to. The phrase
1.慣用語
釋義
與某人發生性關係（委婉說法）
to have sex with another person, usually one you are not married to. The phrase is a polite, indirect way of saying this.
例句
Beatriz refused to go to bed with anyone she had only just met at a party.
The novel hints that the duchess went to bed with her husband's brother.