My only younger (18-yrs old) sister, not only goes and get enagaged after me, but just today i found out from my mom that they will be getting married some Friday in October(2011!) REALLy?!? wHAT IS my problem?? Why do i feel so betrayed by her?? She's my MOH, my bestfriend, my Everything.. And then she goes behind my back and plans to get married in this month. Should i just not care? Please somebody tell me what i should feel, i think im driving myself crazy, and im scarred if she or my mom calls, i may say things i will regret ;( please HELP!