Actor Eric Christian Olsen can't stop crying with joy after becoming a father for the first time earlier this year (13), revealing his baby son is forever bringing out his dad's sensitive side.

The NCIS: Los Angeles star and his wife Sarah Wright welcomed their son Wyatt Oliver in August (13), and Olsen admits he's an emotional mess whenever he's around his boy.

He tells, “We have the most giant baby of all time... He’s huge. He’s an enormous baby. I think he’s 19 pounds at 10 weeks... and he’s a good sleeper. It’s so much fun.

"I’m such a sucker for that kid when he smiles. He squints his eyes and he gets this big gummy smile, and it’s just emotions I didn’t know I had. I’ve become such a softie. I get tears in my eyes, and I get all excited. It’s just that’s not who I am."