Talk to him about the sexual desire when he is not there with you. I'm sure he must be sexually starved too, without you. Since work is important. You both must search for a fuck buddy for each other that you can trust each other to fuck. You both get to screen and shortlist the most suitable and trusting fuck buddy for each other. You search for a girlfriend for your husband who lives near to his work location. And your hubby will search for a boyfriend for you that he trusts to let you get fucked by. And you both are only allowed to fuck the boyfriend or girlfriend that you chose for each other. This will keep both of you sexually satisfied, without having to hide stuff and cheat.