He had memorized the shape of her *** roughly 6 months before he knew the colour of her eyes

Because you see, he likes her principally for her ***, naturally
And the logical thought process here would be that: this is because he likes himself so much
and he's such a perfect *** himself (the poster-boy for narcissism)
or maybe, he's just thinking with the wrong head
presumably, both

Because what are friends for?