update on flirty fish

Thanks to all of you who offered advice and insight.

An update: coming home from the conference last week, Mr. Pisces asked if I wanted to take the backroad home. So we headed off on our journey and ended up talking about all sorts of personal things: self-perception, family. At one point, I asked him: "How long after you met did you know that your girlfriend was THE ONE?" Immediately, he changed the subject but came back to it in a few minutes. He hesitated, considered the question, then said, "Two years." To which I responded, "Wow, so you knew then that she was your soulmate?" He shot back, "Not my soulmate, but the one." Then he said: "We have very different communication style s which can make things difficult. [Pause] It's a soul struggle."

That's the last we spoke of that but yesterday when I asked how his evening had been, he said they'd been fighting til late at night. He asked me not to tell anyone. I told him that if he ever need an ear, I'm there for him.

He seems pretty distant today. I adore him as a friend and am very attracted to him but would not become involved with a man who's in a relationship. Perhaps all this seemingly flirtatious behaviour is a form of escapism for him. I'm afraid to think that he may be interested in me, because I don't believe he and I could ever be together.

What to do?