I'm not sure if there's any Game of Thrones fans here, but after watching the last episode, it had me questioning how lazy their writing is really getting. When Tyrion asked Brienne if she was a virgin, she was incredibly ashamed. Wouldn't she be proud to be a virgin, especially since she's unmarried and has avoided being taken advantage of in previous episodes? I know this is a fictional show, but wouldn't women be proud to uphold that form of honor in medieval times? Or was she ashamed because she's still a virgin as an adult woman?

Basically, how was virginity really viewed in higher-ranking women/men during the Middle Ages?