Most Helpful Guy
Yes, I agree with the other comments, you have been only texting for too long. You need to physically met and get this off the ground.
Most Helpful Girl
I think there's only so much you can talk about over text with a person you haven't actually met yet. I think the best way to do online dating is to text for a couple days, and then meet and see if there's a real connection. Texting for a month sort of... makes things boring I think.
Has he suggested meeting earlier on and you didn't want to? In that case, I could see him maybe being bored with all the texting and feeling like you don't actually want to meet, but just want a pen pal or something. I don't know.
If you feel like you'd get along well, there's no harm in going on a date with him (in a public place) and seeing how things go. You'll get a better indicator of what kind of a person this guy is by actually talking and interacting with him. Until then, he's allowed to be active on online dating sites.