See, I'm going to disagree here. And here's my theory.
Ianto is evil. Now, don't laugh. I think Ianto is a spy, or a double-agent, or definitely has his own agenda. He's not, and never will be, a part of the Torchwood team - not properly. To me, it's blatant that he's shagging Jack for his own reasons, whatever they may be. To lull Jack into a false sense of security. Gareth David-Lloyd actually said at a con, re: S4, that Ianto is bisexual when it suits his purpose.
So the suddenness, the pastede-on aspect of Jack and Ianto's relationship totally works for me, because I can see it as something Ianto suddenly decided to do, in order to gain some small advantage over Jack.
no subject
Ianto is evil. Now, don't laugh. I think Ianto is a spy, or a double-agent, or definitely has his own agenda. He's not, and never will be, a part of the Torchwood team - not properly. To me, it's blatant that he's shagging Jack for his own reasons, whatever they may be. To lull Jack into a false sense of security. Gareth David-Lloyd actually said at a con, re: S4, that Ianto is bisexual when it suits his purpose.
So the suddenness, the pastede-on aspect of Jack and Ianto's relationship totally works for me, because I can see it as something Ianto suddenly decided to do, in order to gain some small advantage over Jack.
And Jack, being Jack, he'd tap that.