go off with somebody

Từ điển tiếng Anh - Cambridge Advanced Learners Dictionary

go off with sb phrasal verb [ goes off with sb going off with sb went off with sb gone off with sb gone off with sb ]
to leave a wife, husband or partner in order to have a sexual or romantic relationship with someone else
• Did you know that Hugh had gone off with his sister-in-law?
Thesaurus⁺: ↑Ending relationships and divorce ↑Infidelity in relationships
Main entry: go_{phrasal verb}