Question for men...

After being in a relationship with a wonderful man for the past year and a half, i realize though we have been through a lot and i have seen him try his hardest to give me what i want...i cant seem to figure out why work is such a priority. At times I believe love should be about this undying passion and constant feeling of being around the person you are with, but I can't get this from my partner.

I can pick out good traits and bad in him, as for any man. i try to be understanding by leaving him to work and not calling so much and allowing him to do his job,but why is it when he  focused i cant get a text or even a call?
...not even a "HEY DOG HOW YOU DOING?"