I want to thank everyone for your comments. Having waited nearly 4 hours for the first of them, I was thinking, c'mon people, talk to me! And then, you did.
I feel that I need to explain myself in a lot more detail. Please bear with me.
My co-worker, let's call her "Mary", has a reputation as a difficult person and, frankly, a fair number of people here do not like her very much. In truth, I have had my moments on that train as well...
I said we are managers; perhaps that doesn't really do justice. We are both department heads in a medium-sized company (~200 employees) - in fact, we are what you might call "critical" department heads with the full support of upper management and either one of us would have to screw up big time before we got ourselves fired. In my case, I have talked about retiring (yes, I am that old), but they do everything they can to keep me here.
Late last year, Mary and I were thrown together on an overseas trip to review the activities of a wholly-owned subsidiary. I was actually more than a little concerned about having to travel with her, eat with her, spend a full week with her; as mentioned above, Mary has a bit of a reputation.
What happened instead was that we really enjoyed each other's company and found that we had a great deal in common. We are both full-blooded Italians, married to non-Italians, and it was totally refreshing being able to relate to each other on this level. I am older than her, but then her current husband is already 10 years older than her and - yeah - I am a bit older than that. At our final breakfast I stepped well out of my comfort zone (for those who understand this, I am an INFJ) and said to her, "Mary, I just want to say that I have really enjoyed your company and I am so glad that I had this chance to get to know you better." She seemed genuinely pleased and told me that she felt the same. In fact, I later learned that she told our CEO (also a woman) that we had become "great friends" and made a number of other positive comments. In subsequent trips (five in total, so far, with at least two or three more yet to come), she has begun referring to me as her "work husband" and it is not unusual for her to express her "love" for me as in, "You know I love you, but ..." , always with a huge smile. Even in meetings with other people present. I assure you, she does not do this with anyone else here at work.
I could go on and on, but it starts to sound goofy after a while. Suffice to say that it is clear that we both like each other but also that I am more vocal about it. We were emailing back and forth a few days ago (work stuff and, yes, company email accounts), when a little door opened and I saw the opportunity to do something I have been wanting to do for months - I said to her, "You do know that I am madly, hopelessly, in like with you, right?"
The situation was such that it could be taken as a bit of a joke or very seriously. I would say that we both sort of made light of it even though we both knew exactly what was going on.
Do I want to have an affair with her? Actually, I think I would be a bit like the dog that finally catches the car and then doesn't know what to do with it. So, no, I don't see this going there.
But, I do have these feelings that just won't quit. She turns up in my dreams. I wake up in the middle of the night and then can't get back to sleep because she pops into my head and then I just lay there deep in thought.
Yes, my own marriage of 30+ years is stale and has been for quite a while and I don't think her marriage is all that wonderful either. But we *are* married and I think we both respect that fact.
Mostly I think that I want validation and affirmation; I want to know in my heart and in my brain that we both dig each other and that, were we single, maybe something could come of it.