@Julesh,
This is just my opinion... I could be wrong.
You live far apart so a committed relationship doesn't really seem possible. I'm guessing he's constantly texting to compensate for that fact. He obviously likes you a lot, otherwise he wouldn't be texting you so much. If you're happy with that, relax and have fun. If not, let him know as soon as possible. If he's a genuine guy like you say, it would be a bummer for him if all this time you've not been in to it as much as he has, which isn't very fair for him. Best to let him know early on, and end it on positive terms.
Do you know if he has sex only with you, with lots of women? It's not the only indicator to tell if he genuinely like you, of course, but if it's just with you, and no one else, that's gotta mean something, right?