The Assassin's Enemy Lover

Enemies always meet on a narrow road and when they meet war breaks out. They met as kids and fought but Zi Han lost. They met in the army as recruits and even then Zi Han lost. He lost again as he remained a sergeant while Yi Chen was promoted to the position of Marshal. Even when his dark history swallowed him whole and shifted allegiance to become the Universe's most infamous assassin he still lost to Yi Chen. Zi Han, "Damn it! Why won't you let me win." Yi Chen, "I can let you win in bed if you like?" Zi Han, "......" When did enemies graduate from rolling in the dirt fighting to rolling in the sheets..... fighting? That's the million-dollar question.