We were left with more questions than answers after a tear jerking two hour Grey’s Anatomy fifth season finale on Thursday (May 15). Just when we thought both Izzie Stevens (Katherine Heigl) and George O’Malley (T.R. Knight) have finally found their happy endings, everything changes and they are standing on the thin line between life and death.

Izzie’s brain rumor was removed. She survived but has short-term memory loss. Alex comes to her rescue and challenges her to hang on to her memories then she loses consciousness. While George became an Army doctor and shows up at Seattle Grace as a John Doe, who had jumped in front of a bus to save a woman’s life. That’s when Izzie and George finally meet in the elevator!!

So did Izzie and George die on Grey’s Anatomy Season Finale? Does it mean Katherine Heigl and T.R. Knight are leaving Grey’s Anatomy??

Biggest cliff hanger ever!! Life vs. death! Katherine Heigl/Izzie Stevens wearing a prom dress and T.R. Knight/George O’Malley in an army uniform inside an elevator… and if you really want to know if they will survive, you just have to wait for next season!

Grey’s Anatomy Season Finale Sneak Peek Video

[video via TVPopcrunch]