In an interesting case of a YA author turning to the adult market, Stephenie Meyer's The Host appears from Little, Brown today in hardcover--this after selling over three million copies of her Twilight saga in the U.S.
As the press release tells us The Host "may possibly be the first love triangle involving only two bodies." Earth has been invaded by aliens who take over the minds of their human hosts, so now poor Melanie has to walk around with two minds. The "Wanderer" is surprised to find Melanie so tenacious--it had expected to subsume her immediately. So Melanie infuses the Wanderer with memories of the man she loves, leading them to both (naturally) go off on a quest to find this man. Thus, a love triangle involving only two bodies.