blonde singer sunglasses gym Ryan Gosling Just stop it, Ryan Gosling!

The Notebook actor stopped by the Body Factory in LA yesterday to work on his fabulous physique, and we were lucky enough to get a glimpse of his bulging biceps as he exited the gym. Swoon!

The Canadian hunk recently returned from filming his upcoming movie Only God Forgives in Asia, and he has been taking advantage of his free time on the West Coast before promotional duties kick in for Gangster Squad, which hits theaters Sept. 7.

The 31-year-old actor has been dating Training Day actress Eva Mendes since last fall, and the couple seems to still be in the honeymoon stage, jetting to see each other on location and enjoying romantic dinners all over the world. Rumor has it the Crazy, Stupid, Love star is the frontrunner to play Christian Grey in the film adaptation of 50 Shades of Grey, so the brunette beauty better be ready to fend off hoards of female fans!

Ry Ry has been open about his desire to settle down and have children, so could Miss Mendes be The One?