The 54-year-old pop star was performing at her concert in Porto Alegre, Brazil, when she leant in for a smooch with her boyfriend, reports thesun.co.uk.
Zaibat, 30 years younger than Madonna, stood behind the singer and wrapped his arm around her waist as they shared the intimate moment.
Madonna was dressed in a shirt and tie teamed with smart trousers and a sexy waist-clincher. The "Material Girl" singer has been dating Zaibat, a French dancer, for over two years.
Spotted: Virat Kohli, Anushka Sharma and other celebs at Mumbai airport
Photos: Salman Khan's 'special friend' Iulia Vantur at a song launch
Photos: Hrithik Roshan, Anushka Sharma, other celebs dazzle at event
In Pictures: Sex scandals involving Indian politicians
Photos: Abhishek Bachchan and Farah Khan at Boman Irani's birthday bash