Heart Broken

When I'm dating someone else, my ex gets jealous and tells me to dump him and be single. When that works out, he's with another girl when HE'S the one I usually want to be with! I'm fucking upset that this keeps happening to us, and I don't think we will be together again if this petty jealousy keeps up between us. I can't move on from him but damnit, can't I try?!?!? Anytime I try, he makes me feel so fucking guilty..... I fucking hate this! I'm going back to study hall and to cry now..... this is the worst fucking day ever now!