What about... Everyone who Tony has ever loved has either left him, lied to him, or betrayed him. So he's just waiting for the shoe to drop and for Peter to do the same thing. So he decides that instead of waiting for the eventual betrayal, he'll push Peter away before it gets to that point. Peter's hurt by Tony doubting his love, but then he realizes what Tony's doing. (Happy ending though.)
AN: The theme song for this fic is definitely Closer by Nine Inch Nails
Read it on AO3 because tumblr mobile is shit







