sooyun is your girlfriend. shes a quiet and cold girl but shes popular because of her look and her grades.

sooyun usually doesnt give any efforts to you which makes you sad so you decides to make her jealous by hanging out with your flirty friend. after your flirty friend got to go, someone suddenly grabs you from beside

-- who is she? why is she so flirty with you. she said in a serious tone.