He calls when he says that he is going to.
He texts me at odd moments of the day.
He emails me and messages me and stays in touch.
I wake up and I think about the day ahead.
There is a text on my phone. It might be practical, pragmatic or tender but he has taken time out of his day to write it.
Throughout the day there are more texts.
He knows that I hate texting and that I will always message him another way if possible.
He doesn't write to get a response.
He doesn't call because the 'rules' indicate that he should.
All day there is communication between us, in one form or another.
It doesn't matter in the least what he says; just that he is saying it.