I have.. There's one ex boyfriend of mine, we've always had a strong connection, from since the first time we've met. Funny enough, at that time, I was trying to hook him with my friend at that time. He never did end up liking her, after all my efforts but all my efforts also led me to getting to know him better and since we had mutual friends, we were always around each other. Although we both acknowledge that we liked each other, we never did get together because he was a fair bit older than I was and at that time, all everyone thought was that he wanted to take advantage of me (I found this out years later).
We hooked up right before I left for Perth but the distance tore us apart. Each holiday I went back, things will re-kindle and everything felt right except that not long later, I'd have to leave again and a cycle happens.

We had many repeats of that happening, and everytime we were right next to each other, it was just bliss. If I was to compare all my relationships to what we had, I think that what we had would have been near perfection, except for the fact that I'm too far away.
We're still close friends, when we talk on the phone, even after months of not speaking to one another, its like nothing's changed. I don't think that I'm going back anytime soon and he can't leave there because he has a family business to run, so we've both decided to let it go and just stay good friends...