Why do people view me as a switch out against the black race?

My mom is african american & my dad was born in Isarel but is of puerto rican descent, so in my head I am mixed-black & puerto rican. Im morena which is spanish for a dark skinned hispanic woman. Awhile ago when i started my new school (sometime in late march) i met this guy & we became friends. One day he saw my tattoo which says morena & he askd wat it meant so i tld him & then he went on to say "why all yu black girls wanna b puerto rican yu kno yu lyin" i got so pissd off i havent tlkd to him since & if that isnt enuf my own mom says that i look black so i dnt have the right to claim my puerto rican heritage& she completely hates my puerto rican bf because she wants me to date a black guy & i think thats completely unfair because if it wasnt for that othr side i wudnt even b here ! dnt get me wrong becus i kno who i am & im comfortable wiff it, bt i just dnt understand y i get so much negative energy from black ppl wen i tell them my race,,im eithr a flat out liar or a switchout who feels that bein black isnt enuf. i lovee both everything about my race ! I love the sexyy curves of bein half black & the beautiful music & language of bein half puerto rican & i even love the middle eastern aspects that i was brought up with not to mention the awesome food of all these cultures lol. Its just hard bein comfortable in my own skin sometime because of the negative feedback i get not to mention when i go out with my bf & i see the faces of angry black men & women. If ppl cud get past the color situation i thnk its pretty obvious im mixd bt ppl have this one side view of how mixed kids are suppose to look even though i never got a lot of support from my mom i always got it from my dad because he raised me to be srong and to be proud of my heritage and thats just what i plan to do im jus curious to hear ppls opinions please shed some light on why black ppl r so hateful with me :) thanxx