Jack clearly didn't seem to agree with the Master on this matter, but the way that the Doctor was sidestepping the conversation implied that it had gotten to him, even just a little. Jack had known the Doctor well enough to know his habits when it came to things getting to him.

"Then he must have loved the hell out of you," he said with a grin to the Master. "You're a mess, darling." Okay, so the Doctor may have abandoned him on that satellite, and maybe tried to ditch him by travelling to the end of the universe... but Jack was a mostly agreeable kind of guy, so why hold grudges?

"You're upset. You're also a dick. He's trying to be nice to you and you keep being a prick. And I know you really don't care, but he does. And you've got to deal with him. And fair warning, if the Doctor's upset, so am I."