Thank you for responding!
As crazy as this may sound, in addition to lack of appreciation for normal motherly duties...shopping, laundry, cooking, cleaning, etc... what I think made a huge difference was snoring. I know it sounds crazy. Bear with me.
In the past 5 years, I lost my mom and dad, had a hysterectomy and a appendectomy.
When I really couldn’t sleep, or had surgery, I recovered in the guest room. To my surprise, I finally had a good night sleep! I couldn’t believe it! I didn’t even think it was possible! I started to stay in the guest room more and more often. I bought breathe-rights, which my husband refused to wear. I used to start in the bed together, and then move. Eventually we both went to our rooms. After a while, this made me cry each night!
Needless to say, to answer your question, more directly, the sex-starved marriage has probably been going on for nearly 4 years.
I started to have no desire other than sleep, and my H said nothing.