Unhappy

i am really scared ... i am scared david is unhappy with his job and life because he isn't happy with me ... he talks about how much he loved working at his last job [the one right before we were working at the same place ... where we met] ... and since then he hasn't had a job he is happy with ... and he is frustrated and upset so much of the time ... i don't want to be the reason he is unhappy ... it really scares me ...