Why must Zack be like this? Especially cuddling right up against him. -- Not that he hates it. He just wanted to move into the other room that is all. Why a big deal be made out of his actions?

"I'm not jealous. If I were why would I try and leave the two of you alone?" Zack might be a little right as Sephiroth does have this problem with ... obsession when it comes to Cloud. But if it were that big of a deal Zack would no longer be breathing.

Even if he won't admit he cares about, well, either of them ... he does, it is just complicated. And he'd rather just pretend to be annoyed at everything and everyone instead.

Besides looking irrated at the universe is Cloud's default setting so he doesn't know why Zack is so surprised by that.

"You're jumping to conclusions, Zack."

While he doesn't exactly verbally state some sort of agreement with Cloud, he also doesn't dispute it either.