Sasuke X Sakura Forever...

I've got a girlfriend who reminds me of Shelke. She doesn't really look young, she's just really short without being a midget. It was kind of strange at first, 'cause I thought of her as some kind of kid sister.

Anyway... theories on relationships are stupid. No one in the living world will ever have enough experience with relationships to know whether two people fit together. The damn weirdest couples can end up together for lengthy periods... sometimes even longer than "perfect couples" if not until death.

I'm not Vincent though and as far as I can glean from the provided information, he probably wouldn't want to "get with" someone who was like a kid sister, which is how I see their relationship now. Same for Shelke. However, that's more of a discrimination of appearance, since despite her looks, Shelke is less of a child than Yuffie.