I can totally relate as I had a girl crush like you describe that lasted for a couple of years. The woman was about 10 years older than me and was my boss and then my former boss as she left the company. She was a really awesome person who in my eyes had it all: A super personality, a beautiful face and figure, and obviously accomplished in our field since she was my boss.

I thought the world of her and obsessed about her ALL OF THE TIME in terms of thinking about her and thinking about talking to her about certain things. (I do NOT have OCD) We were super close and confided in each other a lot about the men in our lives. She was in the middle of a divorce and had started seeing someone else and I was single but doing a little dating. We shared many intimate details about these relationships over these 3 hour dinners that we'd have where we would top non-stop.

Unfortunately, my story does not have a good ending. All of a sudden she pulled back and refused communication and even blocked me on facebook! I was devastated.. Luckily she had already left my company so I did not have to worry about running into her. All along I had been talking about this relationship with my therapist who told me that she thought that my friend had pulled away because she had overshared some really personal details and was embarrassed.

It was super hard for me to move on as I felt like I had been dumped just as if it were a hetero-sexual relationship. I can not believe how much I talked about this with my Therapist both while we were in it and afterwards.

Regarding the sexual aspect, there was really none as we were both heterosexual, but I do remember one time when we were super connected where I was depressed over something and pictured her giving me a hug and me resting my head on her breast similar to how a mother would hug a child. But that was it. I was never close to my mother and my therapist surmised that it was because I was seeking maternal comfort from her.

Good luck and enjoy the relationship. I think that your relationship with your husband is safe. Maybe share this with him so that you don't feel like you're emotionally cheating?