So you have your main character Capell who is special from the main population because he is Unblessed. It means he can't do magic.
Aya is the first girl you meet and it's obvious from a bit after the start that she develops feelings for Capell. She gets jealous at the girls who are all over him throughout the game.
There's even a running joke where girls keep saying, "I'll do anything for you Capell" and he replies, "Anything?" and Aya smacks him. XP
Faina and Leif are brother and sister, and they are like Capell, no magic. Faina develops feelings for Capell right away and he flirts back a tiny bit too. Aya gets jealous when she sees this because she can see the "special connection" these two have that she could never understand. (Starting to see where I'm going with this...?)
These monsters come attack that non-magic people can see but can't fight, and magic people can't see but can fight. Stupid, I know. Anyways, this scene happens:
http://www.youtube.com/watch?v=AdgnjUU6668
It's long so basically Faina is killed right in front of him, confesses her love right before she dies, and Capell goes nuts afterwards with thoughts of revenge. He brings up her and her brother at every opportunity about how they must fight for them, etc. But even with all of this, even though she loved him very much, and they had their connection, he wasn't in love with her.
Imagine, a character who's angry at the death of a girl who obviously loved him and wants to get revenge but he's not in love with her...
Before the last battle, Aya and Capell go off alone together and this scene occurs:
http://www.youtube.com/watch?v=RShXg3_YPuI
Similarities with the highwind scene:
Final day before the last battle
Two characters reveal feelings about the current situation they are in
Girl says a line that suggests she wants to express her love physically... "Even I don't understand my own feelings, so why don't you let me figure them out." *smile*
Guy says nothing after this
Fade to black
Next day girl is a bit embarrassed around their friends
Capell says a couple other lines for those who didn't get the hint like, "It feels great now that all that pent up energy is gone." XP
So no, this doesn't prove Cloti in any way, shape or form. It's a different game that just happens to have scenes and character relationships that mirror what happens in FFVII.
However, I do find them interesting examples. Like, an example of a guy wanting to fight for a dead girl he's not in love with, or fading to black when a suggestive line has just been said implying something sexual happens.
(Considering the Clerii will go on and on about how the first shows true love and the second doesn't have any romantic implications at all. According to their logic, Capell pulls a "...", so he's totally rejecting Aya...
)