17 years old. Severely abused. Need help.

I am 17 years old and I am in the foster care system. As a baby, my mother gave me and my siblings up because she was so young. (She had been 13 and my birth dad had raped her. He was in his 30's) When I was 6, a couple adopted us and told us they would love us forever. After the adoption was finalized, they wound up starving, beating, neglecting, isolating, and torchering me while they treated my siblings amazing. They told me that I was just a mistake, a monster, and that I could never be loved. They said that they were trying to save me from going to hell but that it was hopeless. After 4 years of that, I was separated from my siblings (which broke my heart. I miss them so much) and placed back into foster care. After a year in foster care, a 17 year old boy continuously sexually abused me for some time. My current foster parents are getting divorced and basically ignore me. My first love whom I was with for 2 years broke up with me 3 months ago and said he never wants to see me, talk to me, or be friends ever again. He said he's happier without me in his life. I put more trust and love into him than I had ever put into anyone and now it's over. Now, I don't know if there is such thing as true love or if love can really last. I feel disconnected from humans and I'm afraid of being hurt but at the same time, I long for a close, safe relationship. My biggest dream has always been to grow up, get married to a loving, loyal, great husband, and have kids that i can give the childhood I didn't have to. But, I feel like that will never happen. I truly do feel unloved, unworthy, and like a mistake. I feel so alone. I feel like I just can't be loved. I don't have many friends and I do have a therapist (I've been going to her for 5 years). But therapy just hasn't worked. This is my last semester of high school and after that, I go out into the world alone. I don't know what to do and I don't know how to feel comfortable trusting people anymore. Every time I have trusted and loved, it has always wound up bad for me and has hurt so much. Can people really love someone? Can marriages really last? Tweet