I'm looking for a fanfic where if I recall correctly Peter is homeless. One day Steve and Tony find him and take him under his wing. Then Peter runs away back to where he was staying and then later in the story Tony and Peter show up to find him. Steve goes upstairs to look for Peter while Tony heads to the basement. I also want to mention that Peter is hiding in like the shadows underneath the stair or close to it so Tony can't see him. At first Tony doesn't think anyone is here so he gives up, but as he's sitting in the basement thinking he all of a sudden hears like a breathing sound and realizes that it's Peter and looks to his direction.