Fraternal support

My sister was very sad after his recent divorce. So I decided to host her at my house for a few days. One evening, seeing more anxious than usual I said I would do anything to make her happy. The next morning I awoke with a strange feeling, I got up and a waterfall of blonde hair covered my face. Something magical happened: I was my sister! On the bathroom mirror I read the following sentence: I found that the only man who never disappoint me in life, are you, thank you.