Perhaps Rinoa is just a filthy coquette, willing to resort to anything-- including fingering Squall-- to make her feel good about herself. She sees him and she's like, Oh, there's a tough guy with a cool scar and crazy hair. I think I'll adopt him, and she totally makes him her pet. She's all like, Oh, look how cute, he's clumsy and doesn't know how to dance. And she's all like, I'm gonna make him think I like him by pulling him onto the dance floor with me and make him stay, and then walk away when he thinks I really like him. Evil witch.

Of course, these are just my musings, and not what I really think the creators of the game meant for Rinoa's intentions to be. Really, I'm just jealous because I'm in love with Squall and can't have him because I'm not virtual