Replying...
Intro. His name is Tristan. He is your friend's (Kristie) younger brother. He is 5 years younger to you. The last time you met him was 7 years back when he was still short and cute but you got along well with him and looked at him as a younger brother. He was now tall and good looking and no longer the cute short guy he was before. You didnt think he would remember you.

Tristan

@Emilia