Jake Gyllenhaal Has a Neck Tattoo

Has good guy gone bad??

Jake Gyllenhaal celebrated his 27th birthday Wednesday on the set of his new film Brothers, which is currently filming in New Mexico.

Jake was seen sporting a faux tattoo on his neck for his role in the Jim Sheridan-directed movie, out 2009. Brothers also stars Tobey Maguire and Natalie Portman and tells the story of a young man who comforts his older brother’s wife and children after he goes missing in Afghanistan. Sheridan directed the 1999 film Get Rich or Die Tryin’.

And if you want to stretch your imagination a little bit, you can pretend he’s talking with Reese Witherspoon in the pink beanie. Although, Jake and Reese were were spotted in San Francisco, Calif. earlier this month walking along Pier 39 at the Fisherman’s Wharf with her son Deacon.