You didn't really think Ian's suicide was everything it appeared to be? In fact, on the latest 'Pretty Little Liars' (8PM ET on ABC Family) we learned that everything we thought we knew about Ali and Ian wasn't even true.
Ali being dead in that video at the rock was just a game she and Ian played. She was alive when he left her there, meaning he didn't kill her. He didn't write the suicide note either, as Emily deduced. Or even commit suicide.
"When I read it again," Emily said of the note, "A couple of words stuck out to me. On a hunch I checked out my old text messages."