What do you think it means when your boyfriend or girlfriend says to you their feelings have changed I love you like a brother or sister?

While it is not what you wish, that is what they are feeling. You'll have to believe them and then decide if you want to consider that kind of relationship. Probably not worthwhile, though, unless you were already friends before trying out the romantic angle.

It usually means there is no "desire" left or expected to develop.Take it and move on!

let me make it easy for you guys they found soe one better