It could also mean that there was truly genuine affection and attraction between them, and now that both the elephants are out of the room (Lisa and the Doctor) they are free to follow that attraction wherever it leads.
I vote for some combination of the two.
If you go by tencrush's hypothesis that Ianto's family is dead and make the likely assumption that most of his friends were killed in TW1, and by extension that he has serious death/abandonment issues, Jack is the ideal man for Ianto. He can't lose him to death and in S2 at least Jack follows him like a lost puppy so he won't lose him to abandonment. I think that's part of why Ianto is in such an incandescent rage at John.
no subject
It could also mean that there was truly genuine affection and attraction between them, and now that both the elephants are out of the room (Lisa and the Doctor) they are free to follow that attraction wherever it leads.
I vote for some combination of the two.
If you go by tencrush's hypothesis that Ianto's family is dead and make the likely assumption that most of his friends were killed in TW1, and by extension that he has serious death/abandonment issues, Jack is the ideal man for Ianto. He can't lose him to death and in S2 at least Jack follows him like a lost puppy so he won't lose him to abandonment. I think that's part of why Ianto is in such an incandescent rage at John.