Keeping a marriage together is always difficult when you work a non-traditional schedule...just ask cops, active duty military etc
I work in the oil industry, 28x28 schedule. I married my high school sweetheart almost right out of school, a few years of working this schedule and we got divorced. Got married again in late 20s, only for that one to last 5 years.
Right now Im with a girl who I work with, so we work the same schedule....makes it MUCH easier!