How do those of you with CPTSD have friends and partners?

Is this even possible? To have relationships you need to be able to open up to people. Right? Share your feelings with them. In my situation I can't do that, I feel too ashamed of my trauma. I hold everything inside, all emotions that I also ahamed about; I feel like I believe my trauma is somehow my fault. I believe people will think I'm miserable if I tell them I were bullied in school and abused at home. Can I even say that? I don't know.. I'm ashamed of my need to be loved. Like I need too much attention and I'm a creep for wanting it. But I'm not, right? Or I am?