to go off with
[phrase form: go]
01
と一緒に行く, と駆け落ちする
to leave one's spouse or partner to pursue a romantic relationship with someone else
例
She decided to go off with her co-worker, leaving her husband heartbroken.
彼女は同僚と駆け落ちすることを決め、夫を傷心のまま残した。
After years of marriage, he went off with his high school sweetheart, leaving his wife devastated.
何年も結婚した後、彼は高校時代の恋人と駆け落ちし、妻を打ちのめして去った。
02
一緒に行ってしまう, 持ち去る
to leave a place, often suddenly or without permission, taking someone or something with one
例
He went off with my backpack, and I could n't find him anywhere.
彼は私のバックパックを持って行ってしまい、私はどこにも彼を見つけることができませんでした。
They went off with the company's confidential documents, causing a security breach.
彼らは会社の機密文書を持って突然去り、セキュリティ侵害を引き起こしました。
