Woozi never felt so happy when Hoshi accepted his feelings and address him as his boyfriend. But, that was past. Now, he realize that loving Hoshi is a mistake and nothing hurts more than doing so. 

It all started with a sweet and passionate kiss on the Valentine's night where two hearts becomes one as they make love. But.... each passing day, their 'I love you' didn't store any romantic meanings behinds it. It all fills with lust and needs for each other's body. 

Hoshi and Woozi are brothers, but they love each other in a romantic way and no one knows about it. Not even their parents.

Everyone wanted to know who's Jeon Jungkook's secret love.

If you're talking about Woozi and Hoshi's relationship and what to label them, SIMPLE is just the right word.