have an affair ((with))

    • 夫の浮気のために離婚した
    • She divorced her husband because he was unfaithful to her.
    • 彼は決して浮気はしない
    • He is entirely faithful to his wife./He doesn't play around with other women at all.
    • 浮気な女
    • a fickle woman
    • 浮気な男
    • a man with a roving eye/a womanizer