What do you think of the "goofy guy"?

I recently just started dating this guy and he's very sweet but he's always joking around and is very immature. At times it can be hard to tell when he's being serious. He's actually very smart and hard working but also seems like he never grew up. I'm not sure what my friends and family will think of him.
What do you think of the "goofy guy"?
Post Opinion