I am bi-polar II and have never cheated on a boyfriend(making out with another guy when I was 15 does not really count) Is your wife on medication and in therapy? If not she needs to be. I personally do not think she should use being bi-polar as an excuse for cheating and if I were you I would tell her that if she continues to cheat she will lose you. As for your child I feel for him since the stable parent is away and he is with someone who needs help. Sorry if this was harsh, but you deserve a spouse who will be faithful, especially if you are serving the country.