***Contains possible spoilers for Grey's episode airing 11/20/08.*** Am I the only one not feeling Izzie Stevens having sex with her dead fiance? I have not been OK with the whole scenario with Denny walking and talking around the way, like he is alive. For those who do not watch Grey's Anatomy, here is the backdrop: Denny was a patient at Seattle Grace Hospital, where Izzie was an intern. All hoptie doo, they fell in love, she cut his LVAT wires to move him up on the heart transplant list, something goes awry, he dies. Izzie has a hard time dealing, eventually gets over him. Moved on is dating Alex now. Denny makes his way back in a recent episode where Izzie has to deal with her actions because the…