son ts aint the 21st century why were you expecting that in the first place? LMFAO this is a time where incest was (possibly) still a thing so... the characters not reacting is not surprising at all. even 16 year olds get sold off and married to old men there. i agree that its weird but its not really your typical modern romance manhwa so...
also, not once did evan say that she wants to be called as gerthard's lover.

Omgg isn't it kind of disturbing that the people around MC are encouraging the relationship of her and Gert? Saying things like; they're a mate/couple. My gosh people, she's 17!!! And it's sooo hypocritical of Gert to say he wouldn't touch MC because she's still a minor- BUT actively saying that she's his mate/lover???? Isn't that CREEPY?? DUDE, THAT'S A FREAKING MINOR YOU KNOW THAT. istg the author's just brushing that off under the rug. And one thing- I never actually read the part where MC ADDRESSEES her RELATIONSHIP w Gert.
I think she has NEVER ONCE said that she and Gert is in any relationship; and that MC having romantic feelings for Gert. She just wants to be called as Gerts' lover/mate. I might've missed the part where she said she likes Gert.
And also, the part where she found out that Gert has erectile dysfunction iss sooo confusing to me. Because, imagine that your a minor, and there's an OLD MAN THAT'S LOOKS LIKE THE SAME AGE AS YOUR FATHER does NOT have a hard-on looking at you, and it literally ANNOYS YOU? Girl, an adult shouldn't even get a boner looking at a minor in the first place!!