That's where you messed up. You gave them the opportunity to picture a life without you, by being inconsistent. So when they got the strength, they walked away without looking back. No not walked away, they learned to move on.
I feel that love relationships and friend relationships are the same thing but different parts. The same feeling of wanting closeness with a person. I don't want a "relationship" with drama I just want a special friend to be with and to love.