Which I think is a silly interpretation; Jack doesn't just love Ianto, but his entire team in a debilitating way. Jack has an unfortunate tendency to love people hopelessly, especially tragic given he's doomed to outlive pretty much all of them, and while he may not want his personal authority as Torchwood leader to be overthrown by the team's knowledge of his private life and past, every single thing he does for his team, especially Ianto and especially in Season Two, has me firmly believing they are his highest priority in life. Jack is a very lonely man, and after all; they're all he's got, really.