i never got "flirty" out of Cloud as i played him cool & cold the way Bigs, Wedge, & Barret keep sugesting his personality is in the beginning of the game... i feel if you play it like that, telling Aerith to go home and such, you're playing closer to what the other characters percieve of his personality... his personality was set up by the perceptions of the other characters you interact with from the start, playing it any other way (i.e. flirting with Aerith) is just injecting a bit of your own desires into the character, even if they are the wrong choices you're still allowed to make them for your own enjoyment of the game... the flirty choices are the choices Zack would have made and let's not forget Cloud did take on a bit of Zacks personality there for a while... oh and by playing by that philosophy i always got the Tifa Date...