I really need advice...

Not to put a scare in you or make you nervous or anything, but most guys today,(note I said most not all for the guys who may get offended by that) aren't necessarily about 'hanging out' these days especially when you're about respecting yourself you know what I mean? If he never makes plans to hang out to get something to eat, or shopping or whatever then it's something else that he wants to do. Then again I could be wrong but at the same time you won't know until you've find out if he really wants to hang out or not. Sometimes you gotta take risks to find out.

i think u should go for it and see how it goes with u and him.
(tell me how it goes more questions ask me)

Talk to him about it, preferably when you are both alone. i'm sure he likes you because that is the classic line 'hang out' because then if he is rejected he could cover himself by saying that he only meant as friends. whereas 'go out with' is a more risky and harder to wriggle out of if it goes wrong.
As to why he only talks about it in personyet asks you to text him is something you'll have to mention when you talk to him. It could be because he wants to keep you on your toes and guessing, and that he likes the fact youre chasing him up on it.
Boys are strange creatures as i know from experience, but talk to him and hopefully all will become clear. and ps he defo likes you ^-^