Do you think that Simon and Maddie are gonna end up together in the end?

So we all know that Simon has feelings for Maddie but I’m not sure if they are reciprocated. For me they are platonic friends. The type of friendship everyone should have in their life. But if she can’t see the ghosts next season or Wally actually went through the door do you think they’ll end up together? We all know how jealous Wally was of Simon and his relationship with Maddie but do you think they’re endgame here?

Edit: thank you everyone!! Also can someone explain how Maddie’s key is her necklace that she didn’t have because she broke it and gave it to her mom before having her body taken over?