your boy bsf

you guys have been friends for months yet you're already really close. he's popular among the girls. there's rumours about you two if you're dating him or not or about you two being friends w/ benefits. none of it is true so you two just deny the rumours n continue being friends. then a week ago, jungwon starts acting differently. he's become more sweet, jealous when he sees you w/ another guy, and possessive over you. today, you're gonna ask him about it but don't know how to.