I've alway been interested in "what the brain is doing" and why. He is getting his rewards somewhere else. It does not matter why, it happens. Research the brain and what it does and you will find out it has less to do with who you are and more to do with his reward system in the brain. It happens to all of us (and not just romantically), with parents, friends, lovers, bosses - how many of us had our loved ones choose booze or drugs over us? Why do you not care for your husband any longer?...there is not enough of a reward for you. I know your brain wants a reason...you will waste a lot of time and be in a lot more hurt trying to figure out why. If your husband loved you that much and you did not love him the same way...would you want him to constantly suffer with "why". It's very very sad that you cannot find support where you live. Often people use a pill to fix everything...I do not believe in that - it's a combination of medication if you need it and therapy. Would you be comfortable seeing a professional for "general depression" without giving all the details of why?