Theory.... maybe?

Ok, so firstly seperate the story to three parts, beginning ( when eren is hugging levi), middle ( when eren dumps the food) and ending ( when eren sees levi in the city). In the beginning, while eren is hugging levi, levi says eren's name with a question mark. This is important as ( in my point of view) levi feels as though " don't you remember i killed you? Why are you happy seeing someone who killed you?". Plus, there is a part where levi is hugging eren while seeing his reflection, the reflection shows eren wearing his titan battle uniform, as if levi still felt guilty for killing eren in the past. After their sexy time ( ugh, levi you son of a gun.... ) , we see eren leaving the house after preparing food for "eren " but ends up dumping the food. Well, BEFORE this incident look at the ending first, we can see them having sex and levi telling eren that he killed he him in their previous life and ended up comitting suicide due to guilt. And that is why the food was left untouched (levi is dead), eren is in a delusional state, denying that levi comitted suicide yet knows it by heart. When eren is in the city, he has a delusion that shows eren is in disbelief that levi is alive. . . . Love the work of the author but it may be too confusing to certain people, i hope that this explanation is of any help to everyone ^^