To be honest, I think you must do something positive about your marriage. The physical act of love is important, but not the most important, and things can change. You said more than once that other than sex there is no problem in your marriage. He doesn't seem to abuse you, on the contrary you keep praising him in spirit and in look. I know it is a sensitive topic for me to ask questions but why do you sleep in separate rooms? You don't need to have sex to sleep together, do you? This is an active decision to increase the distance between you two. This is no good, in my opinion, because this will create a distance that cannot be bridged. I am still trying to see what the real problem is. Is he still stressed out about his work, or he is more relaxed now?