Copywriting:
I love you so much and you love my sister so much.
My sister loves you so deeply, just as you love her deeply.
So, who can love me?
Everyone is blessing you so much, but I am cursing you so much.
I even have to force a smile to watch your intimacy.
My sister is so powerful and beautiful, and I am so humble and ugly.
I know I'll never get him,
So please don't insult me with "I can leave him".
I know I will never get you,
So please don't trample on my dignity and aspirations again and again.
You'll never know,
I love you so much.
Who am I?