i hate guys

I learned that when i was with a guy last july he was with another girl. Hes been asking to be with me for months on end. And it turns out they have been dating the whole time. So i met her showed her the txts he sent me and there still together. Shes fucking stupid as they come. Then this other guy who said he likes me his gf whos pregnet messages me yells at me like its my fault. Ah hello if you cant keep your man on a leash how the fuck should i know if hes with someone. His pro says single, looking. How can i trust any guys anymore. How am i to date anyone im affraid they are cheating or cheating on me. What do i do stay single forever. How am i to get married one day how will i have love if i cant trust him. I wish there was someone to talk to but there never is. My best friend i fucking hate her. My family doesnt understand or know alot about me. I have no one. NO ONE.