David Krumholtz, Michael Urie

What are friends for?

Almost breaking up your BFF's barely-day-old engagement — if you're Partners' Louis (Michael Urie).

The new CBS comedy, from Will & Grace creators David Kohan and Max Mutchnick, is about lifelong pals and business partners Louis, who's gay, and Joe (David Krumholtz), who pops the question to his girlfriend Ali (Sophia Bush) on the series premiere.

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Except Louis doesn't know that the couple is betrothed and mistakenly assumes that they have broken up instead. Check out our exclusive sneak peeks below to see the fallout from Louis opening his big mouth.

Partners premieres Monday, Sept. 24 at 8:30/7:30c on CBS.