You basically turned her down and now your telling her that you "like her"!? Bro u crazy? Have you not realize it later or sooner? And now the she has a boyfriend you'll come around ans confess like that.. look I feel sorry for you but don't just ruin their relationship like that.
@Mics but you see that siyun harms him right? I got a feeling that he just can't sit still because he afraid that siyun would do something to her like how he did to him