If these feelings are leaking into other parts of your life like your sleep, energy, hobbies, mood, etc., then you need to get some help or at least change your focus.
I think I would feel the same way if I lost my life and I think I would have to put my focus on other things in life rather than another wife. Maybe I would become an amazing fisherman, golfer, wood worker, volunteer, or something else. Just make sure you’re doing ok in life and forget about the companion thing for now. I’m sorry man.