Tomoyo is like... a little girl. That's just a creepy relationship! I guess if she grew up, it would be kind of cute, though. ^_^ But then who would Fai have?
I just saw Fai and Kurogane together because it's CLAMP, and because Fai teased Kurogane yet they were still kind of close... um, and the vampire thing. Mostly, though, it's CLAMP.