Man if that's true then I have severe issues with Laguna. I know she was cruel, and keeping her in stasis is one thing. But keeping her trapped while she's concious?????

Clin-ton Griever being a GF is the least likely possibility as far as I can see. Not only does Squall have an entire conversation about it, never once mention GFs or that Griever is anything more than a name he came up with, but Griever is never mentioned anywhere else, it doesn't even have a card. The conversation with Squall I think pretty much sealed it though.