It does stink that after such a big upheaval, he's being deployed and you'll head home. Going back to be close to your support system will be much less isolating, for you. I presume that you'll be in waiting status for him, while he's deployed? It's a good grace of time, to try counseling on your own, self help, group support and reenergize yourself with a favorite hobby and spend quality time with family and friends, where time spent with them doesn't dwell on him, a therapist and support group is a great place to dump your feelings about him and any revelations you come to. Journaling also helps.
If you aren't feeding into his negativity, with newfound skills, it'll better help you find peace about your own decisions and emotions where he is concerned.