Well... when Roxas and I first started to become friends, he took me to this special place that Axel had taken him and he gave me ice cream for the first time, and then when Axel came back and I met him, the three of us ate ice cream together and that's how we became friends.

So... I guess to me, sharing ice cream with someone special means that you think they're special, and sharing your favourite ice cream makes them extra special. Because it's good, and you love it, so you want the people you love to feel the same way.