Our favorite The Office couple are at it again. Co-stars John Krasinski (Jim Halpert) and Jenna Fischer (Pam Beesly) are continuing their hilarious online war about the Stanley Cup finals.

Krasinski supports his beloved Boston Bruins while his on-screen wife Fischer, is an avid St. Louis Blues fan.

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Now, Krasinski has taken the battle to the next level when he featured a guest in his latest jab against Fischer. The actor was able to enlist another The Office cast member to make fun of Fischer in a video he posted last Wednesday.

In the video Krasinski is heard saying: “Jenna Fischer, I know we’ve been having our ups and downs recently,” the A Jack Ryan actor said in an Instagram video. “I just wanted to say, I’m really sorry you’re not here,” he added.

While Krasinski addressed Fischer in the video, a man made his way to sit beside the actor. The man turned out to be Fischer’s ex-fiance from The Office, David Denman. Denman played Pam’s former flame Roy in the hit sitcom.

“This is Jenna, by the way,” Krasinski tells him. Denman then hands the actor a beer and gives a quick “Hi” before turning away from the phone camera.

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Fischer replied to the Instagram video. In the comments she wrote:

“Ha. Ha. Ha. Be careful he doesn’t leave you at the game,” in reference to Roy leaving Pam at a minor league hockey game while they were on a date.

Fischer, 45, wrote in the comments section with a nod to the Office episode in which Pam told a story about how Roy left her at a minor league hockey game while they were dating.

Krasinski and Fischer have been bantering back and forth on social media throughout the Stanley Cup Finals. Their playful rivalry dates way back when the two were still filming the hit NBC series, according to Fischer.