We never mentioned about it, it is just obvious, there's a spark between us.
We broke up because we are not able to be in each other's city now and in the future.
We are friends now, really close friends (not as close as best friends), but I'm afraid that if we still have feelings, then when once one of us got a new partner, another of us might get jealous and will ruin the friendship we had built.
But we agreed to leave everything behind, so I don't want to say something like: let's not be friends for the moment because we still have feelings etc. Our friendship is very healthy and positive, I don't want to ruin it.
We are friends now because we were good friends before started dating, and also because we have many mutual close friends.