I normally wouldn't comment on a post such as this because I believe leaving it at that. I appreciate your honesty and also most importantly, experiencing hurt like that and on social media had to be disheartening.
From what I understand, Black men and Black women have a lot of growing up to do. For hundreds of years we have not truly learned to love each other's bodies- minds-souls. We've always went in the direction of White to find "true" love and complain to white partners about "Black Men this and Black Women that.
Unfortunately, Black Women, to Most Black Men are at the bottom of the totem pole of desirability, whether the black woman is beautiful, smart, sexy, quiet, shy, loud...she does not register on the Black man's radar and we hear black men compare us to white/non-black women all the time so it's pretty painful. As you've stated, White Women have never and will never experience NOT being desired, so they cannot possibily understand the pain of constant rejection.
I am happily married to my Black man, but he is more than a complexion. He is a good man.
I write this sincerely.