What if the only reason Eric has an interest in Sookie and want to have his way with her is to make Bill jealous? I've been hearing about some homoerotic tension being stir up between Eric and another character in the new season. What if Bill and Eric had sex with each other in the past which Bill doesn't look back fondly which is why he seem to have such a personal dislike for Eric? Eric sees Bill with Sookie and seem to a bit jealous about it despite his effort to hide it from others. So he's thinking if he has sex with Sookie, Sookie will lose interest in Bill and once that happens, Eric will tose Sookie aside and Bill would be back to being all his to mock and secretly desire. Maybe that would be Alan Ball's way of messing with the expectations of those watching the show who have read the books. So there will be a Bill-Sookie-Eric triangle. Just it won't be the one most of us are expecting.
