I am gay and have been in a heterosexual marriage for 57 years. We have two children and two grandchildren. My situation is not usual but it is more common than you would think.

Up until I was 43 I would have said, "I know exactly who and what I am and I am not a lesbian." One year later I fell in love with another woman, and my world turned upside down. I sometimes wonder what would have happened if Toby's feelings mirrored my own, but that was not to be. Our friendship ebbed after I declared my love to her.

At home, with great difficulty, I functioned as though nothing had changed. Privately, and in great pain, I mourned my loss. Feeling totally alone, I had to contend with not only the loss of my dearest friend, but also the realization that I might be a lesbian. Who could I tell? Where could I turn for help? I knew of no one in the lesbian world, and so, I turned my thoughts and feelings inward and picked up my pen.

The first edition of my book "Married Women Who Love Women" began as a catharsis for myself and ultimately came to be a guiding light for many other women making, or coming to terms with, discoveries like mine.

I learned who I really am

And I have learned much about who I really am. In the years that followed, I felt compelled to write the second edition of "Married Women Who Love Women," and then a third, which has the words "and More" added to the title because so much has changed, and continues to change with regard to people redefining, or returning to their marriages.

Just recently I stood in front of 200 women at a writers' conference to give a reading. I paused briefly to reflect. It had been at this very same conference back in the early '90s that I had timidly come out by reading what would eventually become the introduction to my groundbreaking book.

A feeling of well-being came over me as I announced loudly and clearly, "I will be reading from my latest book, a lesbian, paranormal romance, 'Tangled Ribbons.'"

My journey was not an easy one. I sought out several therapists hoping for an easy fix, but I could barely say the words, "I fell in love with my best friend and she's a woman." Ultimately, at a party several years later, I ran into one of the early therapists I'd gone to for help and she told me that she was now using my book in her attempt to guide other women like me.

In addition, same-sex marriage is now accepted in all 50 states, and beginning with the Netherlands in the year 2000, many other countries, as well. Unfortunately, though, in some parts of our country, it is still somewhat terrifying to come out.

Redefining our relationship

Once I realized I was a lesbian, I initially believed that my only option was to leave my marriage, something I'd never contemplated in my 25 years with my husband. When I came out to him, our marriage became fraught with anger and bitterness, especially on his part. That would have been the perfect time for me to leave.

But the more I thought about it, the more I realized that it had taken me some time to adjust to the realization that I was a lesbian, and felt that it was only fair to give him time to adjust, too.

During that interval, I was reminded time and again of the love and caring we once had for each other, and still had, in the little things each of us continued to do for the other. After we had plowed through our initial difficulties, we decided to stay together until our daughter, who had been apartment-hunting, found a place of her own.

In that interim, to the best of our ability, we re-created a new reality and redefined our relationship. It has come to work for us and we have remained together.

Although some women may choose to believe that I have remained in my "heterosexual marriage" for the privilege and perks that come with it, the truth is that I have remained because I have a deep love and a tremendous respect for this man who accepts and loves me knowing that I am an out lesbian.

Being married to a man and being a lesbian is not easy. Some marriages remain intact because no disclosure is given, others because women are fearful of the unknown, or fearful of what their families or churches might think of them if they were to leave their husbands.

But I have received, and continue to receive, e-mails from women redefining their marriages rather than leaving them, and they, too, are re-creating their realities.

It might be a co-dependency issue, but at the heart of most redefined marriages, there is something that each party feels is important enough to preserve: possibly for the friendship that has grown over the years, or for the comfort of knowing that a spouse, or an ex-spouse, has your back.

Carren Strock's "Married Women Who Love Women" is now in its third edition. This article originally appeared on NextAvenue.org.