Joe Burrow and Olivia Ponton are apparently done keeping their romance under wraps -- the Cincinnati Bengals superstar and the model were spotted out and about in NYC together over the weekend.
TMZ Sports is told the lowkey lovebirds were attached at the hip all Friday night ... hitting several different celeb spots before ending their tour outside an apartment complex around 3 AM.
Burrow was in town for the Fanatics Fest ... and was sporting a 'fit that would make Bill Belichick proud -- a short-sleeved oversized hoodie and baggy jeans to match.