I'm so so sorry things are crappy in your relationship, but I do hope they can be patched up. It sounds like you really value and love your partner, and hopefully s/he'll see that. (and I don't think you need a point a post when you just need some support. I'm certainly happy to give it!)
, things have changed around a lot with my partner's schedule, so he doesn't work 24 hours (or more!) straight before deadlines anymore. His nocturnal schedule is a huge pain in the ass to me, and gets in the way of our time together, but at least we have more of that than we did before.
Anyhow, good luck and take care, Lady!