Jake Gyllenhaal was spotted kissing Ruth Wilson.

The 'Nightcrawler' star is reported to have enjoyed a ''passionate'' kiss with the 33-year-old actress after they took a fitness class together at Barry's Bootcamp Noho in New York on Saturday (09.05.15).

The hunky actor, 34, was said to be in ''workout mode'' as he sipped on a protein shake while he waited for the brunette beauty to exit the changing rooms.

According to the New York Post newspaper's Page Six, he then gave her a ''passionate but tasteful kiss'' when she emerged.

The news comes just weeks after Jake insisted he was single during a TV interview with host Ellen DeGeneres.

The star was first linked to Ruth - with whom he starred in the Broadway show 'Constellations' earlier this year - in December.

The pair were also said to have been ''all over each other'' at this year's Golden Globe Awards.

An insider recalled: ''Ruth and Jake were all over each other and didn't seem to mind who saw them.

''They were holding hands and shared a little kiss, it was sweet.''

Shortly afterwards Ruth gushed over her co-star but insisted she and Jake were more like brother and sister.

She said: ''He's adorable, a really good guy. We've become like brother and sister a little bit. We spend so much time together. We trust that even if we have a little [disagreement - which is going to happen because we're in a tense environment that demands a lot from us - we'll make up and we'll be fine. I trust him implicitly.''