I have disappointed in love I have disappointed in love 和I have been disappointed in love

没有i've disppointed in love 的说法

i've been disppointed in love
i've disappoint you
i've disppointed your love for me

前者disappointed是作为动词disappoint的过去分词,后者的disappointed是形容词,作"失望的"解

两者翻译一样

我已对爱情感到失望。
爱情已对我失望。

1.我对...失望
2.....令我失望

应该没有不同吧

我对真爱已绝望~~

我对爱很失望

爱让我很失望