The 'Gossip Girl' star and Lenny Kravitz's daughter have called time on their two-year relationship but allegedly remain on amicable terms after their union came to a natural end.
The 26-year-old hunk was first linked to the 'After Earth' actress mid-2011, a year on from his split from on-and-off-screen love interest, Blake Lively.
A source told Us Weekly: ''It is all good between them. It wasn't a sad breakup. It just wasn't working. It really did end on good terms, though.''
Zoe - who is the daughter of rocker Lenny Kravitz and his former wife, actress Lisa Bonet - has been working non-stop over the part year thanks to a blossoming film career.
The insider added: ''They are at two different stages in their careers. They just didn't have time for each other.''
Penn famously dated Blake - who is now married to Ryan Reynolds - from 2007 to 2010.
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