Be mixed up with somebody - Idioms by The Free Dictionary
be/get mixed up with somebody (redirected from be mixed up with somebody)
be mixed up with (someone)
To be involved with someone. I'm worried that he's mixed up with a very dangerous crowd these days.
get mixed up with (someone)
To become involved with someone. Don't get mixed up with a dangerous crowd like that.
be/get mixed ˈup with somebody be/become friendly with or involved with somebody that other people do not approve of: I told her I didn’t think she should get mixed up with that group, but as usual she ignored my advice.