Rereading the whole thing because that's how I roll and I've came up with a conclusion. Yui is more of a bitch than Suzuka.
Flame me all you want but at least with Suzuka you know how she is going to act. You might not know what's going thru her head, but her personality has stayed constant throughout. She tries to put distance between the guy she likes because she doesn't want to feel the hope of going out with someone snatched away like it was when that one guy died. She gets over it, kind of, but she isn't the one to like talking about her feelings to anyone. Hell the most she's opened up to anyone is when Yui came to talk to her. My point is you know the kind of person you get with Suzuka.
Yui on the other hand is to forward. Not a bad thing being forward but she deliberately tries to break Yamato and Suzuka up. Something Suzuka never did when Yamato was going out with Honoka. Hell she even kind of supported it, well she said she didn't care if Honoka confessed to Yamato, that's supportive right? Yui is also to pushy and tries to get information people don't want to talk about out of them, no matter how many times they say they don't want to talk about it. Then she goes over to Yamato's house when he's still grieving and forces herself onto him. Sometimes you need to go do that, but this wasn't one of those times. Yamato would've gotten out of his rut sooner or later without the help of anyone but Hattori.
The last reason is kind of iffy, because after she left, Yamato got his act together and went out.
What it boils down to if you can't call her a bitch you have to at least call her selfish.
Bullet Tooth Tony: You should never underestimate the predictability of stupidity.
Reporter on Titan Maximum: Sasha is there any connection between your poor album sales and the fact that it sucked?