Does your SO have any hobbies/interests? My SO is always too tired (please, no jokes, grow up). She works hard, fair enough, but I dont think she undersands there's more to life than just working. I work my ass off too but not only do I have a bunch of energy all the time, on the weekends I do as little work as possible to take a break and do something non-work-related. I even stay away from the bike since I started commuting on it.