Shan Hun Hou, Gu Zong Ma Jia Cang Bu Zhu Le

Duan Qing Yu mistakenly enters the wrong hotel room and spends the night with Gu Huai Yan. Three years later, amid parental pressure for them to marry, they encounter each other again and decide to enter a three-month marriage contract to avoid further pressure. Surprisingly, Gu Huai Yan, who develops rashes when touched by a woman, doesn't react the same way towards Duan Qing Yu.
(Source: DramaWiki)