Thing is...Six in Baltar's head may or may not even be there..could actually be his imagination. Or if she is helping him along, I too wonder if she's following her own agenda or is everything in the grand scheme of the Cylon plan. I wonder if Six really is a figment of his imagination or she stuck somethiing in his head.
She says she loves him, and you kinda wonder if the Six on Caprica was upset a few weeks ago when she and Doral were talking about emotions because, she had actually felt what Sharon feels when she was with Baltar those 2 years but can't actually be with him now, or was she truly upset because she couldn't feel what Sharon feels.
I don't think Shelly Godfrey was Baltar's six in the flesh, just another copy...however, it is strange that she vanished, leaving the glasses behind.
Here's one to bake your noodle...what if Caprica Boomer is the one we saw in the mini-series, and the Galactica Boomer is one they switched with Cap Boomie when she was taking all those solo jumps looking for ships in the mini on her own....both Cylon, but Mini Boomer knows everything about Helo and Galactica/tyrol relationship and simply told/transferred her thoughts to the second (3rd, 4th, 5th?) copy.
2 more episodes to go, and then July for season 2!!!