Taylor Lautner is dating his 'Tracers' co-star Marie Avgeropoulous.

The 21-year-old actor has gone public with his romance with the 27-year-old brunette beauty after the pair were spotted hand-in-hand on a romantic stroll in New York during a break from filming.

Taylor recently gave Marie a piggy-back up the stairs at the Astor Place Theatre in New York City, when they went to see the Blue Man Group.

Marie, who had sustained leg injuries and was on crutches, was struggling to get her footing on the steps she was climbing when Taylor swooped to the rescue.

A source said: ''After the show they popped downstairs to meet the cast. But Marie, who's on crutches due to a leg injury, had a tough time getting back up to leave. [Taylor] carried her up piggyback.''

The pair left together after enjoying the show and signed autographs for fans outside.

In 'Tracers' Taylor plays lead character Cam, while Marie is his love interest, Nikki.

Taylor previously dated Taylor Swift, Emma Roberts and Lily Collins.