@Kelly68, I had a guy years ago whom I thought was particularly special, but it was mainly because he was such a huge support for me in ways no one else had been up to that point in my life. But when I looked at our actual chemistry, our interests, our values and our approach to the relationship, I did not find much commonality between us.

Along the lines of what @TishaBuv is saying... I wonder if the same is true for you? Because this guy has been so supportive of you in a multitude of ways, that it felt good to feel so supported and that's what has made him so special to you?

There's nothing wrong with seeing someone from a light of appreciation.... in fact, it's really good to appreciate a person for what they've done for us.

I get the sense that this may be a part of the reason why he sticks in your mind so much?