hi, thanks for query. I know managing marital relationship is challenging task for both.Have you tried to discuss your emotions with your wife, are you sure she is not interested in marital relationship. You both can visit the family therapist in your place, I am sure they will help you to handle the issue and come to the clarity with fruitful decision for the future. take care. stay positive.
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try spending some time to each other, focusing on how you both want to lead a life. if you have the drawbacks in communication, expectations, understanding each others emotions and thought process and also the self which is very important.