Fig.: to break up a relationship for good

Renzo thought he could afford to do anything he wanted because his girlfriend was a shy and indulgent young girl, but as soon as she met a more decent guy, she gave Renzo the kiss-off without even thinking about it twice

Renzo pensava di potersi permettere tutto perché la fidanzata era una giovane timida e accondiscendente, ma non appena lei ha conosciuto un ragazzo più serio, gli ha dato il benservito senza tante storie