I hate that statement of "he's not aware of his feelings yet". It's almost complete crap.
To be clear, yes, there are some very, excessively few cases of people truly being not aware of their own feelings. They might be in denial, for example, even though it's evident.
But this is not one of those cases. It's more of a case of Seto not actually having fully developed feelings. It's not a yes/no question of "do you have feelings or not". It's stupid to think that it's this binary system.
And honestly, this kind of segues into a later chapter.
He doesn't actually know anything about her, as she herself tells him. He's just confusing his feelings for love. Saying he wasn't aware of his own feelings yet makes no sense when his feelings are not this binary system, this yes/no.