[If he's honest Ianto hasn't thought much about Kirk in all this either and that realization brings its own flash of guilt as he runs into him. He doesn't blame him for anything that happened with Jack; their problems are complicated and their own and would have happened regardless, but he does feel bad that he hasn't conveyed any of that to Kirk.]
I'd say I've been keeping myself busy but if I'm honest my hobbies are rather limited. You're brave to be out today. Has anyone warned you what happens when these things show up?