Oh Yuki...

At first, I was sympathetic for you, and genuinely cared..

But the more I see you, the more I realize you are just a greedy and self-centered person. I liked you more before you realized how you can USE Gary for your own ends.

Because that is all that you do to him; you USE him.

(To be honest, Amber also wants to USE Gary, but she still has a more quid-pro-quo approach)