you and jungwon are neighbors, he often confides in you abt his relationship at your bedroom window. The relationship between him and his girlfriend could be said to be toxic, so he was really tired of that. And then.. you accidentally fell in love with him, but you knew that he already had a girlfriend, so you kept it to yourself.

this morning you saw Jungwon sitting in the park bench and you approached him, you two chatted for a while, but suddenly a girl approached him, it seemed to be his girlfriend. and sure enough, they kissed in front of you.