Dear Tuckerswife,
I feel for you and I am really sorry that you feel this way. I think you are still very strong and determined and no matter what you will find a way for you. I truly believe this! My husband is the same way when it comes to talking. But there must be some way to find out what's going on with your husband. Maybe he doesn't feel the same way but he doesn't want to tell you to hurt your feelings. Maybe he also feels the same way as you, sad and lonely but doesn't know what to do about it. Then of course, question remains, why did he have this relationship with this other woman?
If you think that he is detached from you for other reasons, I would try maybe try talking to his friends? Or family?
Either way, you are right when you say that you shouldn't have to waste the rest of your life lonely and sad and this way. If he goes out without you, then you should try to find something for yourself, to help you get your mind off this and try to enjoy life, friends and family and remember happiness and that you could be happy again.
and you will!