I have been engaged for a year and our upcoming nuptials take place in the summer. My older sister recently announced she is engaged yet no one knew she was dating anyone including me. I asked her to not get married next year being that I am and it will be both her and F 2nd marriage. Recently, she asked me to be in her wedding party and is attempting to get married early next year. Do I have a right to be angry? Does that make me the terrible sister?