They were photographed walking arm-in-arm at Jonas's cousin's nuptials near Atlantic City over the weekend, TMZ reported.
The "Quantico" star was wearing a gold dress, the "Jealous" hitmaker looked dapper in a suit with white sneakers, sans socks.
They were also snapped heading to the JFK Airport when they were travelling together for the wedding.
The duo sparked dating speculations early this month.
Chopra, 35, and Jonas, 25, were photographed for the first time since reports of their alleged relationship went viral on the social media.
They have been spending a lot of time together lately and were seen enjoying multiple dates over Memorial Day weekend.
They first came together when they posed for photos on the red carpet together in Ralph Lauren designs at the 2017 Met Gala.