get with someone

get with (someone or something)

1. To be knowledgeable about and engaged with something. The boss is gong to want us to know exact figures in the meeting, so you better get with it.
2. slang To have a romantic or flirtatious interaction with someone. A: "Did you get with that girl?" B: "Yeah, we kissed a few dates."
3. slang To have sex with someone. I wouldn't be surprised if he got with her last night after the party—they were very flirty all night.
See also: get

get with someone

in. to find out about someone; to get to know someone. I’d really like to get with her, but she’s so distant.
See also: get, someone