He's Zhein, you're brother's friend, you met him when you were 14 and fall in love with him secretly but he always think like you were his sister.

When you were 19, and met him again after 2 years, you still likes him and he secretly likes you back.

One day he walks with you to your university, he's 24 now, and he says "Hey little girl! Hmm...i like a girl and i want to coffess my feeling for her, what should i do?". When you hear that you suddenly feel jealous and sigh, you finally answer him "Maybe...give her what she likes". Zhen smirks and look at you "Give the thing she likes? Okay...then what's you like?"