unknown emotions

I have been married for almost 5 years, and I didn't realize I was killing it. I'm not an emotional person when it comes to expressing how I feel. I lost my Aunt to Diabetes 4 years ago, she was my world. I believe I lost a part of me when she left. In that time, I refrained from intimacy with my husband which I didn't know was a problem. I would be o.k. sometimes, but majority of the time, I had no feeling left at all. I hated it, but didn't know how to get that back. I felt lost. Me & husband are Christians, and were very involved in our church. We would pray "separately" searching for answers but nothing seemed to change. Recently my husband expressed to me that he was fed up, and his feelings had left me. In which case he started developing feelings for another woman. I felt crushed. I never considered his feelings at all, basically I didn't fight for what I already had. Needless to say, we are still together, but everyday is a fight. Anyone who reads this, please take the time out to say a prayer for healing. My family needs your help.