The 54-year-old star was performing at her concert in Porto Alegre, Brazil, when she leaned in for a kiss with her boyfriend, reported Sun Online.
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 waist-clincher.
The "Material Girl" singer has been dating Zaibat, a French dancer, for over two years.