The Stanley Cup Final will officially divide the Halpert household.
The fictional relationship of Pam Beesly and Jim Halpert from the popular sitcom "The Office" will be tested, or would be tested if their characters held the same sports loyalties as the actors who portrayed them.
Jenna Fischer, who grew up in St. Louis, and John Krasinski, a Boston native, will be on opposite sides of the Stanley Cup Final when the puck drops for Game 1 at TD Garden on Monday (8 p.m. ET; NBC, CBC, TVAS, SN).
Krasinski tweeted his dismay over that fact after the Blues won the Western Conference Final.
Fischer didn't stay silent on the matter.
But the fictional couple aren't they only ones with split loyalties.
Boston Celtics forward Jayson Tatum, a St. Louis native, shared his congratulations for his hometown hockey team on Twitter.
Andy Cohen, the St. Louis native and television personality, tweeted his excitement about the Blues win.
The account for Laura Branigan, the late singer whose 1982 hit "Gloria" became the Blues' Stanley Cup Playoff anthem, also shared congrats.
Y98, the St. Louis radio station that played "Gloria" for 24 hours after the Blues defeated the Dallas Stars, announced they'll be doing it again.
Bengie Molina, the former Major League catcher whose brother Yadier has been the Cardinals catcher since 2005, shared a slew of pro-Blues posts while attending the game with his son Danny and nephew Yanu. He, of course sang along to "Gloria."