Ryan Reynolds is one seriously buff dude! The 38-year-old is bulking up for his new role in the X-Men spinoff, Deadpool -- and has been using his gym time to get a rockin' -- as well as meet some little fans!

The new dad posted an adorable pic on his Twitter account of himself and a little boy named Adley. Ryan captioned the adorable post, "This stud out-benched me in the gym Sunday. Nice meeting you Adley.” OMG! HE'S SO CUTE! WE LOVE HIM!

Not only is Ryan hot -- but he seems to be in love with being a dad with wife Blake Lively. At the New York premiere of his new film Woman in Gold on Monday, the movie's director said of the famous father, "I can't imagine a better dad than Ryan."

The director added, "He's such a sweet, funny guy. He seems besotted with his new baby, and I think he'll be a remarkable father."

In the new movie, which is based on a true story, Reynolds plays an inexperienced lawyer who takes on a new client, an elderly Jewish woman, looking to fight the Austrian government in an attempt to recover five stolen Gustav Klimt paintings.

The film opens in select cities tomorrow and nationwide April 10.