Help me find this BL

Looking for a Korean BL webtoon. The MC has black hair and has been in love with his best friend for years. The story starts at the best friend's wedding. Heartbroken, he gets drunk and has a one-night stand with a man who turns out to be the bride's rich brother. The brother pursues him afterward, but it turns out he was treating it like a game/bet at first. The MC works in interior design and later renovates the newlyweds' house. Does anyone know the title?