Same Reason.

Now, to keep having sex with Aiden, she'll need to be leaving her academy without the knight picking her up. So she needed to tell him this lie now, 'It would happen again...hanging out with friends'.

When what she was supposed to tell him was, 'It would happen again...having sex with a certain charming boy'.

..But we all know she can't tell him that.

The Knight's voice resounded, "I'm saying it's a risky thing for you to be hanging out with friends due to you being the daughter of a high-ranked chief, and you're telling me it would happen again,

There are wicked people out there, and who knows? Maybe you're being targeted. Why do you think you guys are being protected by us? Why do you think it's my job to be picking you up from school...one of the reasons is to secure you from danger,

You aren't concerned about that, you're saying it would happen again and to keep it a secret between the both of us?".