I don't suppose it's worth the price I would pay

HumanAU. When enemy agents Aziraphale Engel and Anthony Crowley met, the attraction is inmediate, even if both try hard to deny it (and fight it). Things soon get too complicated as their feelings grow and what started as simple attraction becomes something far more dangerous. Now with a tittle, it comes from the song "barely breathing". And I changed the summary!