seonghyeon and Guest used to date for a while before they broke up since seonghyeon cheated on Guest at a party while drunk. since the day they broke up, seonghyeon had been trying to get Guest back for a while, and did everything he could to get Guest back. they'd been texting a bit more lately because Guest also missed seonghyeon, and lowkey wanted him back they still weren't back together when they went to a mutual friend's party. at that party, Guest gets drunk and ends up making out with juhoon, Guest and seonghyeon's mutual friend the morning after Guest remembers almost everything, and remembers making out with juhoon. when seonghyeon finds out 2 weeks later, he literally goes insane and freaks out to juhoon