I can't imagine that anyone who ever looked at Spock could possibly not find him attractive.
I'm not just saying that because he's my bondmate, either—though he would probably think so. Even before I fell in love with him, I could never imagine anyone being more beautiful than him.
I'm pretty sure that at least everyone on my Bridge crew would agree; that's the only way I can explain the fact that I was barely teased for my (admittedly rather blatant) staring when I first started out as the Enterprisecaptain.
So yes, I will freely admit that my attraction to my bondmate was, at first, purely physical. But that didn't last too long.
Despite my fixation with his striking good looks, or perhaps because of it, I really wanted to get to know him better, so I started inviting him to play chess with me. And I have to say it, I was kind of shocked when he agreed—I hadn't really gotten the impression that he liked me, much less wanted to get to know me.
Anyway, through our nightly chess games, I learned a lot about him, like the fact that he preferred green tea because it reminded him of Vulcan spice tea (an item which for some reason could not be replicated on the ship) and, thus, his home. That he actually liked Bones, despite their perpetual arguing. That, although he never showed it or mentioned it to either of his parents, it deeply bothered him to not be on speaking terms with Sarek.
Looking back, I'm not entirely sure how it happened—I was young, brash, and cocky, totally unlike Spock in every way. He shouldn't have been able to tolerate my presence for more than a few minutes at a time, let alone become my good friend, but he did. And I, despite my previous preference to stand alone, found myself starting to open up to him in turn.
That was the point at which I probably should have realized it, but I didn't. I was too busy—too busy getting lost in not only in my First's eyes and barely-there smile, but now his addictive personality and mind as well.