Lindsay Lohan is apparently filling the void left by lady love Samantha Ronson by spending time schmoozing Hollywood A-lister Sean Penn.

The Mean Girl and her DJ gal pal seem to be spending some quality time apart following a series of catfights and bust-ups over the holiday period, inviting rumours that the couple have split.

According to US reports, Lindsay is moving onwards and upwards with the showbiz elite, leaving Sam out in the cold.

Lindsay and Sean reportedly dined at Nobu in L.A. before heading to the opening of Guy's nightclub.

This latest outing follows a string of sightings of the pair together in December.

But rather than feel jealous, could Sam be breathing a sigh of relief that Lindsay is moving on?

A source tells Page Six, "Sam broke up with Lindsay but she is completely in denial about it."

See Lindsay and Sam during happier times below