Maybe This Time I'll Win

Within the last 24 hours I guess I've had a lot on my plate. There's a whole Liz thing that makes me scared for my life and for her happiness.
On top of that, last night I dreamt about Trevor and Taylor again. In fact, I dreamt about talking to them, then talking to some friends, and turning around to see them laying down next to each other. This wouldn't be such a big deal if Trevor was wearing pants and Taylor wasn't wearing skimpy clothing. It would've been especially better if my dream didn't take place in a mall. In my dream, I was hurt and I walked away. Trevor didn't understand what was wrong and tried to follow after me (now with pants on) and get me to tell him what was wrong with what he was doing. I just kinda gave him a look and kept walking until I was talking to Shannon. I told her how I felt utterly replaced. Shannon thought that I was being unreasonable and jealous. I felt like crying.
I know it was only a dream, so I can let it go. However, it doesn't help when attached to some other issues.
I officially am crushing on Sam. I'm quite aware that I stand no chance with him, but I havee the little dreamer girl's voice ringing in my voice, clinging onto the hope that he'll like me back. I most definitely am not going to ask him out anytime soon. 1.) I wanna get to know him better. For whatever reason, I'm perfectly fine with taking it, whatever "it" would be, slowly. 2.) It sounds pathetic, but I don't know if I can take rejection. I'm worried that it'd kill my self-esteem that I've been working so hard to get back.
Trevor doesn't particularly like me, but what else is new? I know I shouldn't be affected by this, but it bothers me. He doesn't have to love me or even like me better than most of his friends, but he dislikes, maybe hates, me. I can't really say with confidence exactly why. I just have to deal with it.