Can you be married, live in the same house and be lonely? Yes!
I agree. In my house it is for the same reason as yours. Once I told my spouse I had no interest in being a jw I was tattled on and thrown under the bus. It got ugly!
Do you have any non-jw family? Would there be any way you could re-connect with some of the friends you used to have? It may take awhile to develop the close friendship that you seek, however, it is worth the effort! I have a friend that I can confide anything in. I will always have her back and she will always have mine. The friendship is not conditional on the two of us agreeing on religion.