D. Martin
Super Freak
I thought of it as Anakin's idealistic view of the world, going back to Episode II, his I'll learn to stop people from dying speech, that even though he followed Palpatine more than the Jedi, he still didn't agree with his views and saw him as a stepping stone to become powerful enough to shape the world into everything he wanted it to be. Between AOTC and ROTS, Anakin became a person consumed with creating the perfect world, but blinded by that to a point he couldn't see the wrongs in his actions and truly believed he was taking steps towards a greater good, like firmly believing that killing the Jedi at the Temple was for a greater good. And in his grand view for the galaxy, he and his loved ones would be at the top of it all, ruling it all.
It seemed pretty obvious to me that Anakin, in his distraught, was only saying the things to Padme that Sidious had subtly drilled into him over the years. We see Sidious say a few of the things to Ani before he goes off to with Padme.
I think Obi-Wan was aware of it for years too, and while he didn't approve of it, he kept it to himself until the scene in ROTS about spying on Palpatine. I think that is what Obi-Wan meant when he told Luke that Sidious seduced Anakin to the Dark Side.