The reports came around the time Jennifer started dating Justin Theroux back in May last year, who she was pictured out with last night alongside Shirley MacLaine in Los Angeles where they enjoyed a meal at celeb favourite Giorgio Baldi.
Earlier in the week Jen and Courteney, who played Rachel and Monica in Friends - went on a double date at posh private member's club, Soho House in West Hollywood.
The pair were seen laughing and chatting together on Tuesday night.
Jennifer - who is godmother to Courtney's eight-year-old daughter Coco, arrived with her actor beau at around 8pm and they were met soon after by a mystery man.
Courteney turned up half an hour later and greeted her former co-star with a big hug.
A source told RadarOnline.com: 'Jennifer and Courteney looked really happy to be in each other's company, and she seemed to get on well with Justin.
'I don't know who Courteney's guy was but Jen was cosying up to Justin and seemed relieved to have Courteney around again.
'She's Coco's godmother so it must mean a lot to her to maintain the friendship.'
The pair were making the most of a rare night together after Courteney recently filed for divorce from her husband of 11 years David Arquette.