Why do black women get jealous/mad of white women dating a black man?

i've been dating my jamaican man for a year now. i dated a white guy before him for two years and i have never gotten bad looks or hear bad talk then. my man is amazing, good looking, an athlete, and in college. we have a good future ahead of us if we stay together. since ive began dating him i get dirty looks or hear bad talk from black women who pass by us or in the same area as us at college....my man moved from jamaica to the US three years ago and travleed to where i live to go to college on scholarship. my man says black women are mad/jealous cause white women marry good looking successful black guys. i think based on what ive asked my man and his friends that they think some black women are embaressing because of their loud mouths and attitude, the way some dress, etc. they want a good looking classy girl. idk why some women, ALL women, not just black women call themselves "wifey" and wife type when i see they are so ghetto or trashy.....anyways, why do black women get so mad or jealous/ i want others input.....