How to keep him interested while texting over a long distance?


I really like this guy from school. We are both juniors and he had been looking at me for four months before we had a conversation and I gave him my number. The problem is that I'm in Europe for a month and a half and so far only one week has passed. Ever since I gave him my number right before I left for Europe, we've been texting each other every morning and evening (because of the time difference). He texts me every morning when he wakes up and lets me know when he's going to sleep and I do the same. I'm worried that we're gonna learn too much about each other and when I come back we might have run out of things to talk about.
Should I text him less and is it a good sign that he texts me right after he wakes up and before he sleeps? How can I make him call me without saying it directly (we've never talked on the phone)? Would a guy text me like that if he doesn't find me attractive?

How to keep him interested while texting over a long distance?
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