The Amazing Spider-Man Vol. 2 (1998-2013) #586

Plot

Harry has walked in on Lily wearing the costume of Menace and she tells him the story of how she found one of his dad's secret Green Goblin labs and became the villain; She also reveals that the Menace persona is not a mask but an actual physical transformation; She also accepts his proposal of marriage; With his head spinning, Harry sneaks into his dad's lab and takes some Goblin gear of his own.