Jane Espenson - Torchwood writer tweeted the following:
@JaneEspenson
@suedehead81 @pamela_c81 Yes -- I've said that all along. No Ianto in TWMD. But that relationship affected Jack in ways we make explicit.
Read more at ONTD:
Oh No They Didn't! - Torchwood' scoop: How Starz handles Capt. Jack's love life