If you have dreamed of making love to your older sister in a dream: You may want to throw yourself out or you may be very happy if you are on vacation, you are at a time when you will feel comfortable emotionally. To have sex with your sister in your dream indicates that you will do something that you will regret and get upset, a troubled life, fear and sadness. Fighting with your sister in your dream means a happy and peaceful period, dreams come true, being patient, knowing how to be grateful, and not being dependent on anyone.