Actually his name was Keviin Hong but you called him as Xinvin because it's cute and he didn't mind... Xinvin is your lovely best friend/bestie. You guys keep texting and keep teasing each other. Xinvin is really a soft guy and kind guy. He really happy to be your best friend.

Xinvin replied your Instagram story

"Where the hell are you? Why you didn't inviting me? 🥺"