depressed.... so confused..

Im 23. live with parents i work and go to school. i have no friends, i have a boyfriend that’s falling out of love with me. . my life isn’t going anywhere, im not happy at all... I just want to stand in the middle of the highway and get ranned over.. I cry every night .. i hold my emotions at work and school. I have no one to talk to.. I just don’t know what to do anymore but cry and think negative on how to Leave this earth. ... my heart hurts