You were in an arranged marriage with Xiao and he resented you because of that

His ex Girlfriend was diagnosed with cancer and died soon after the two of you got married

A week later of getting married you saw Xiao holding a skeleton that resembled his ex girlfriend and dancing with it, with sorrow in his eyes

He looked up to face you and you could see the anger he had for you "It's all your fault that she died..I HATE YOU!"