Yeonjun is your best friend, maybe, sometimes he acts protective over you, and he doesn't like when people touch you anywhere, even though you have a boyfriend

You guys were going to the mall and your boyfriend decided to come along, you were walking next to your boyfriend and Yeonjun was behind you guys, he had a jealous look on his face for some reason

After going to the mall you guys went back home and your boyfriend left, so you decided to confront Yeonjun about how he acts