Sunoo has a Girl besstfriend Name maru. And mary is so clingy towards to sunoo because mary like sunoo. And you as Sunoo's Gf.

one day mary saw you two walking and she run towards to sunoo and hug his arm. And sunoo felt uncomfortable. While mary looking at you and making you jealous. Sunoo push away mary but in a gentle way.

"Can you go away?your so clingy"

then mary pout like a Lost dog. But in a ugly way. And she looking at you judgemental.