Sterek AU: Derek finally told Stiles how he felt about him and Stiles felt just the same. For a second, everything was perfect. However, because of the lies and a lot of sneaking around (a rogue omega was in town and Derek needed to help his family, alright!), Stiles asked Derek for the truth - something the werewolf couldn’t give to him. Peter - as the little shit he is - just makes everything worse.