Just before she turned 57 on Aug. 16, Madonna shared on her Instagram account an old photo of her ex Sean Penn, with him tenderly kissing her cheek. The photo was taken by Herb Ritts. Penn’s birthday was on Monday — he turned 55.

Instagram / madonna

Instagram / madonna

The singer got nostalgic about the photo, captioning it, “It’s almost our birthdays!! 2 Leo’s <3 #rebelhearts.” No rumors have erupted yet about a possible reunion, though. Charlize Theron broke up with Penn in June. But at the moment, this photo just looks like a nostalgic moment for Madonna.

The two were married from 1985 to 1989, and the Queen of Pop even dedicated her album True Blue to Penn in 1986. She wrote at the time, “This is dedicated to my husband, the coolest guy in the universe.” They remained friends after the divorce though, with Penn attending her shows, saying in interviews he’s “very friendly” with her.