I agree but it doesn’t seem like that kind of setting. She’s friend with the crown prince and with the archmage (did I spell it right) and even bears his child. On top of that she’s a famous general, respected by the king, and by that logic she also has a lot of money. So I don’t think she’s still a commoner, and im pretty sure that being a general she must have received a noble title. It’s not like she popped up out of nowhere being a commoner and decided to fuck an engaged noble. Well maybe I’m too sensitive but I hate it when the two main characters don’t communicate. Like speak first and if he doesn’t like it leave? Instead of doing it the other way...
i believe it was because her child will be a illegimate child, and won't be accepted.

Bruh why there’s a ton of webtoons with FL being pregnant and not discussing it with the father and just leaving and then it’s always ML searching her and forgiving her for kidnapping (basically) their child ? My mother tried kidnapping me when I was younger, leaving my father (who didn’t do anything) and I don’t hold good memories of that. Let’s not forgive unjustified kidnapping guys