Funny, I never noticed that happening. I saw the girl hitting on the 'hunky bishounen' more than a jackhammer does the pavement, but he was pretty much oblivious to her, since he had eyes for the dark haired girl he grew up with.
No, he was still interested in Tifa, but when you've got the memories of your dead best friend running through your head, things get complicated.There's a limit to how much fangirls can take. Secondly, it's not like I like Tifa or abhor her big boobs or whatever, but for crying out loud this girl was Cloud's childhood friend. Despite sharing so many fond memories together, Cloud didn't bat an eyelid at her at all and what did he do? Like Aeris?