Sean Penn’s marriage of 11 years reportedly came to an end after wife Robin Wright Penn found in him bed with two other women.

Robin filed for divorce late last month citing the standard “irreconcilable differences” but refused to give any further details about what was behind the split. Now Star magazine is reporting that Sean was unfaithful during a weekend away.

A source told the publication that the pair were staying at the Squaw Valley resort in Lake Tahoe, California but were not staying together: “Sean didn’t spend much time with his wife - he booked her a separate suite - and when Robin got fed up with being alone, she went over to his suite.”

When she got there, she “found him drunk with two Russian girls.”

Sean and Robin met on the set of State of Grace in 1990 and have two children together, 16 year old Dylan and 14 year old Hopper.