Whys he being like this?

I tend to agree that he has his mind on something else. You say "you know he'd be worried about YOU" if it were the other way around...but he's not worried about you now? What difference does it make who is where....the fact is is that you two are apart, and he is not "worried". If he doesn't have time to text you, then he doesn't have time to even think about you. Sorry....