Tony x Clint(?) Fic
I have a feeling it was Tony x Clint but I am not 100% sure... It was a fic where Tony had a relationship with someone who secretly was working undercover spying on the terrorists in Afghanistan at the time Tony was kidnapped. He couldn't help Tony without his cover being blown and ruining the mission, and Tony starts dating him without realising that he was there.
Tony eventually finds out. Any help finding this fic would be appreciated!