Friendships between men and women are rough. Even after years of a platonic friendship, there is always a risk one falls in love for the other, and not always the love is felt by both. At that point you can’t really be her friend anymore, as you are hurting all the time wanting more than friendship.

Telling her how you feel and the decisions you made are correct and you should not feel bad, as it is not your fault that you caught feelings and they hurt you.