Justin Bieber had nothing to say -- at least to us -- about Selena Gomez hooking up with The Weeknd ... but he did almost lose his way.
We got the Biebs and Patrick Schwarzenegger at Catch Saturday night ... and as Justin was leaving, he gets disoriented when fans start asking for pictures. You'll recall, he's not that into it anymore.
Car's to the left there, bud.
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