What should I do?

My fiancé and I are hours apart right now cause he’s visiting his hometown. But I found out that when he got drunk with some of his old high school friends, he ended up confessing to one of the girls that he used to really like her in high school. I don’t really know how to react to this cause she told him she didn’t like him back like that. But I’m also feeling a bit hurt or wary about this situation right now
What should I do?
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