your (fake) bsfs ex

you've had a bsf, seonmi, since you were kids. but overtime, she's been acting weird, and fake. you recently found out that she's been talking sht about you behind your back. i didn't really surprise you since you saw it coming, but you're still shocked that your own childhood bsf would actually do that to you. a few days ago, seonmi got a new boyfriend and you were the last to know. you were surprised because it didn't even come from her, it came from her friend. and after seonmi's other friend told you, it was perfect timing because seonmi texted you and said she wanted you to meet someone, her bf. his name is lee minho, minho for short. he wasn't bad, he was treating her well, is attractive and looks rich. but that thought didn't last long as today, seonmi was ranting to you about how she found minho doing it with another girl in the restroom bar and he confessed that girl wasn't the only one, so they broke up. you wanted to get back at seonmi and you use this opportunity to. you text her ex, asking for a favor and he replies oddly quick

"aight, bet. what is it?"