<human>: Can you give me the gist of the text in a nutshell?

I was adopted by a well off white couple, and grew up a life of privilege.  When I turned 18 I decided to find out who my parents were.  Eventually found out my mom was a teenager when she had me and my dad was a black football player.  I'm very light skinned and have white people hair (sorta like Blake Griffin) so I can pass for a caucasian, but still appreciate my african american heritage.  

When I went to college (at an southern SEC school)  I joined a frat and meet the most beautiful girl ever.  She is everything I want in a woman and treats me wonderfully.  I think she could be the one for me.  

But she is terribly racist towards black people.  She constantly talks about how they are ashy, unemployed, stupid, poor, lazy, etc. She even called Obama a n*gger.  Furthermore, due to her distaste of rap music, I had to delete my 2pac pandora channel.  I want to tell her the truth but she has said before she would never be with a black guy.  I introduced her to my adopted parents, so she thinks I'm some rich white kid.  Im very conflicted as I feel I should tell her the truth, but I don't want to lose her.   WHAT SHOULD I DO?!? PLEASE HELP
<bot>: Racist GF thinks I'm white, really I'm half black.  Don't know if i should tell her the truth.