Beast is Red, page 5.

Tifa: .. Huh? Today we're with Barrett?

Barrett: Sucks, huh?

Tifa: No, that's not what I mean... Recently we've been going with Aeris a lot, so... And where is Aeris, anyway?

Cloud: Aeris is on her own today.
There was somewhere she wanted to go.

Tifa: Hmm.. unusual, isn't it.

Tifa (undertone): Lonely?

Cloud (undertone): Why?

Barrett: Hey, let's go! 

I decided to go into action with Cloud's group after all.

I had the feeling that I had to.

Even so...