This is what the OP said to bring up the fact he didn't call. I can see how he'd be considered a liar- to those who say that he should have called everynight like he said- If I said I'd call you every night I wouldn't necessary consider texting calling. But that's me, and I'd actually say I'll hit you up every night or something- to let her know it might not be a call, but it would be some form of contact.We get to talking and started playing around and I teased him about how he hasn't called me until after 3.
But back to what I quoted- I hate that tactic. As someone mentioned, that's undercover complaining, nagging even. That is ANNOYING, and I can understand why her dude answered that way. When we're annoyed, we're less likely to try to find the right words. What comes out is unfiltered or unscreened, because you have touched a nerve.
He loves her, but she's out of sight, out of mind when he's on vacation. I'll put money on it that he thinks about her more than he expresses to her. He also knows he'll see her again in a few days, so the situation is not hopeless. He'll be happy to see her.
It's like when you go on vacation. As much fun as you have had, once you are home you are happy to be back to familiar surroundings and your bed. You don't necessarily miss these things. Now I know some of you will think 'objects vs people', and that has some merit, but it's not as clear cut, and that example's for illustrative purposes. He was having a good time and he accomplished the purpose of his vacation, but once that was over it was home and happy to see his girlfriend!