Jake Gyllenhaal sure doesn’t look single, as he recently claimed.

The hunky actor was spotted sharing a “passionate” kiss with rumored gal pal Ruth Wilson in New York over the weekend.

The former Broadway co-stars, who were first linked in December, took a fitness class together at Barry’s Bootcamp Noho on Saturday, which must have gotten their juices flowing: Onlookers tell Page Six they were in “workout mode” during the class but looked cozy afterward.

After sweating it out, Gyllenhaal, 34, had a protein shake while waiting for the star of “The Affair,” 33, to shower and change in the locker room.

Once she emerged, they shared a “passionate but tasteful kiss” before leaving separately, Wilson with a group of friends and Gyllenhaal solo, onlookers say.

A few weeks ago, Gyllenhaal told Ellen DeGeneres during a TV interview that he’s single.