My story is very similar to most of your situations, except i have kids. My wife and I have been married for nine years and we have an 8 and 5 year old kids. We had a good life and we were happy, we thought a lot alike, we were a happy family.
Unbeknownst to me, about a year ago my wife began exhibiting delusional behavior. At that time she accused me of cheating on her. She believed I was with someone else while I was volunteering, even after she came and saw me where I was volunteering. After about a month of that accusation she decided to move on and continue life, until March first of this year.
This March she started making accusations accept it was worse then last time. She opened the flood gates on the accusations. This time she stated started by accusing me of cheating on her but it rapidly changed in to something much more bazaar.
She believes I am Gay and cheating on her with a guy that sends me a text on holidays along with everyone else in his phone list: Texts like marry Christmas or Happy Thanksgiving or Happy Halloween. She believes I am a pathological liar. She also believes that I may molest our children if I am alone with them for an extended period of time. That is the toughest one for me to take.
She believes that I am having someone follow her around, that I have spyware on her computer, that I have been filming her in the bedroom and in the living room. She went so far as to have the police come break apart the alarm clock because she believed there was a camera in the clock. She has put a GPS tracking device in my car to see here I am going.
We have both had physiological evaluations mine came out normal hers diagnosed her with dilutions, paranoia, and depression. We had individual meetings then a meeting with the psychologist (should have went to a psychiatrist, psychologist can not prescribe medications) together to discuses our results. She still refuses to accept the diagnoses of the psychologist, in fact she claims she doesn’t remember that the psychologist said she has paranoia or delusional disorder, its like the psychologist never said she had those issues.
I am grateful she believes I am gay, it has allowed me to stay in the house with my kids. She does still care about me; she keeps tying to unrelentlessly get me to come-out to make my life better. I still can see without any change my marriage will end. I am beginning to loose hope.