Okay, it sounds like you have a crush (which is okay!), but your mind is running away from reality. That can be hard to control sometimes... when you're feeling a man, you can sometimes get caught up thinking about the future, your future together, your last name with his
and all that stuff.
I don't know of a woman (myself included) that hasn't gone through that.
However... I think what you probably should do to slow things down is not talk to him as much by phone. That was a mistake I made with a few men in the past... we would talk for like, six hours, and the men got comfortable with me really fast too. Maybe because I meet a lot of men who work in the sports industry, and they are so used to being around men that they like letting their guard down with me.
The problem is, the more comfortable you get (and often times, they tell you about personal problems), the more attached YOU begin to get. Then it's possible that they might not even be feeling you like that or if they did originally, they changed their mind in Month 2 or something like that.
Then you're left feeling stupid.
So, limit the phone conversations and text messages.
Also, it sounds like he's telling you he needs a break too if he's frequently telling you that he has to go and he'll call you back later. So YOU end the phone calls first and set a time limit in your head about how long you'll speak to him.
He sounds like he's a nice guy and this could turn into something great. But right now, you're acting like a girlfriend when you're not. Have no expectations of him, scale back on the communication and sit back a little while you let HIM show you his intentions toward you.
And have fun on the date!