Soo...does anyone knows if it's really his first time or not?

It's his first time
It's the trope where:"omg he's too big so no one could handle him"

But I thought he was having sex with his actor friend??

he wasn’t lol

Misunderstanding
Spoiler*
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The actor friend is an alpha, he has a boyfriend, jaekyung is the third wheel used to protect the boyfriend from media