yes, i think saving Lisa kept Ianto alive after Canary Wharf, but now that he's done it and with the seasonal change where he'll go from being almost completely housebound with her through a winter to now being able to get out into spring/summer is when he'll begin to realise just what it is costing him...
i like this Ianto, he's really trying and i'm having so much fun with him and i'm keeping my fingers crossed for some good prompts in future challenges as his bunnies seem to come best from there...