A casual stroll, a swanky dinner, and now TMZ can reveal Katy Perry and Justin Trudeau wrapped it up with cozy drinks on a terrace — a really long hangout session for two A-listers … but sure, they’re totally “just friends.”👀

Yep, it’s the hangout that keeps on giving, and TMZ’s got every moment. Check this video — Justin was looking every bit the ladies’ man, arm practically welded to Katy’s waist as they left Montreal’s Taverne Atlantic … with sources telling us they enjoyed some drinks on the terrace.

If that doesn’t scream romance, then we don’t know what does. Whiskey is on the menu at the Atlantic … but we’re told when Katy first ordered a Jack and Coke, she quickly found out they don’t sell much American liquor in Canada due to the new tariffs … so she ordered Crown Royal Canadian whiskey instead.

The terrace tête-à-tête capped off a whirlwind few hours that, as TMZ told you, started with a scenic park stroll.

Justin was looking a little too excited during the casual outing, and the good vibes kept rolling at dinner at Le Violon — and whether it was business or casual, Danny Smiles, the chef who served them, confirmed to us: no PDA.