Madonna and Sean Penn are VERY friendly exes!

A source has exclusively told In Touch the former married couple have been secretly hooking up amid the actor's relationship with Leila George — who's young enough to be his own daughter!

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“They’ve been meeting up for secret love sessions for a few months now,” the source revealed, adding the pair, who were married in 1989, rekindled things last winter.

maddona sean penn — getty

Madonna and Sean seem to be falling for each other all over again, "It’s actually very romantic," the source continued. "When they’re not together, Sean writes Madonna poetry and she sings to him over the phone.”

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