A flash short piece I've worked over a few times has a dead guy put prominently in the first two-thirds. The problem is that you don't know it's a dead guy until the twist in the last third. I'ts in first person. Protagonist talks about him, falls for him, (I seem to write a bit dark, who knew!) but what strikes the reader is that it bumps up against that rule of thumb where the protagonist interaction with anyone else should be a showing of interaction and not telling. She talks about things and he does nothing at all. In the end the reader gets it, but until then it just feels unbalanced and incorrect. I don't want that feeling. He's dead and I don't want the reader to know that until the end. How can I approach this moment of interaction with a dead guy without letting on at all? I can't talk about the past with him, there isn't one between them. I can't just tell, I need to show. Would changing to a third person perspective work easier for this? In the first two-thirds, it's just her and him. Ideas?