How would you react if you waited for marriage to have sex and found out the person had a major deformity you didn't know about?

Examples. Major scaring or something that could be even more severe visually like funnel chest/pectus excavatum.

https://lifewithpectus.com/resources/celebrities-with-pectus-excavatum/

How would you react if you waited for marriage to have sex and found out the person had a major deformity you didn't know about?
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