Aside for him being a synthetic human with almost no feeling, he has never ever had experience of feeling something strong and different when he saw someone.

As you were helping him with brewing potions, Albedo could often find himself starting at your beauty. He almost couldn't concentrate.

When you asked what to add in the potion after adding some crystalflies, he snapped out of his trance and answered in a calm, cold tone he always had.

"Ah... just add some Sumeru roses." - he said, sighing.