Courteney Cox had a ''blast'' reuniting with Matthew Perry on his new show.The former 'Friends' co-stars - who played married couple Monica and Chandler Bing on the hit sitcom - will appear on screen together once again in his new comedy series, 'Go On', and Courteney loved working with her one-time TV husband again while shooting her guest spot yesterday (19.02.13). The actress wrote on Twitter: ''Shooting GO ON today and having a blast with Matthew! (sic)'' Courteney, 48, later posted a picture of the pair on set, adding: ''My first box husband.'' Matthew, 43, was also ecstatic to have his former co-star on the set of his series, tweeting: ''Courteney Cox shooting Go On today! She is fantastic, obviously. And my desire to show off in front of her is back in full swing! (sic)'' 'Cougar Town' actress Courteney played a love interest for Matthew's character Ryan King, a sports radio host trying to get over the death of his wife. The famously close-knit main 'Friends' cast - which also included Jennifer Aniston, Lisa Kudrow, Matt Le Blanc and David Schwimmer - have continued to support each other following the show's end in 2004. Jennifer and Lisa have both had guest roles in 'Cougar Town', while Courteney and David made appearances on Lisa's programme 'Web Therapy'.