Claude, we all have parts of ourselves that we conceal from others. I haven't told you many things about myself, and which I assume the Other Byleth didn't either.

[And unless Claude was a perfect actor, then whatever secrets he was keeping weren't going to change Byleth's perception of him. You couldn't feign that level of patient kindess without some sort of irritable frustration leaking through, or slipping up in some way.]

So, don't feel pressured to share more than you're comfortable with. Even if you shared those secret parts of yourself, it won't change how I feel about you.