In my head, that is what really happened. S'CANON I SAY!

Huh. It's actually not for me -- but that's becuase I don't believe that Ianto would fully cheat on his comatosed cybernetic girlfriend. It's a perfectly valid interepretation (and one that's very fun to mentally picture) but not one of those stories I utterly believe in.

Doesn't make it any less hot, though.