The mystery woman held tightly onto Justin, 47, in The Big Apple.
He even went in for a big kiss!
The woman in question is Broad City actress Ilaza Glazer.
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Their PDA was strictly professional, as the two were filming the upcoming horror film False Positive.
Ilana, 31, married longtime boyfriend David Rooklin in a private ceremony in 2017.
Justin has been linked to several A-list actresses since his split from Jennifer, 50, in February of last year.