My girlfriend told me that she was a bit feudal. What do you mean?

She is telling you that two people can't have sex until you are officially married. In other words, her thoughts are very traditional. I think this kind of girl is very good, especially in today's open era. This is very rare. This is your luck. At least she's a virgin now. Now that she has made it clear to you, you should respect her and don't ask for that before you get married. I wish you a happy marriage and family in the future!