Cruel Ex-Boyfriend

Seo-Yeon has lived next door to Doha most of her life. They went from childhood friends to lovers, but Doha's betrayal made Seo-Yeon leave him. They're home from university, and Doha won't leave her alone. Seo-Yeon doesn't want to like him after all she went through, but can she stay strong? (Source: Manta)