I don't know this feelings. Sometimes, I felt jealous with everybody.  When you really obssesed at something, you really care about them. But, at the end, you will hurt because you care too much. Example, you have a boyfriend and you really love him. But, at the end, you broke up with him and you get hurt. I don't know how to tell you all about my feeling. I can't express it. And I never tell everyone about my feeling. I need someone. T^T