What's the meaning of "young Jack" in the following dialogue? And what's wrong with person A? A:So did you ask her out again? B:Not exactly. A Why not? You said yourself you had the perfect time in a boat. B I know. A So what's wrong with you? B It's just that it could be awkward. A What's awkward about asking someone you've just had a perfect date with for another one? B It's work. A Since when has going on a date been work? B No! I mean it could be awkward at the cafe. A What's the cafe got it do with it? B Well, you know how difficult young Jack can be. A And? B And ... I think he might find it hard if there was any kind of 'special relationship' going on. A Well he's a grown-up like the rest of us. Maybe he'll just have to learn to like it or lump it. Sorry, I made a mistake. I should ask "what's wrong with person B", but not person A. Since B is falling in love with a girl, but he has no courage to ask the girl out. Maybe, as Jura said, young Jack is someone immature, or has no experience in doing something. Do I guess right?