 In Series 3 he gets uncomfortable when strangers suggest that he and Jack are a couple, is offended when an elderly man under Torchwood protection refers to him as "the queer over there".At first he even tries to avoid the subject when talking to his sister, before confessing that while he is not attracted to men in general, he indeed has a relationship with Jack.However, as the end of the 4th episode of "Children of Earth" suggest, Ianto was only able to tell Jack that he loved him when Ianto knew he was dying.