He curled his hands around his own mug, and just looked at Jack for a moment. Looking at the little differences that hadn't had a chance to before.
Then he cleared his throat,"Not to indirectly resurrect a sore topic. But on the subject of friends. When my Master said 'Anything we can do for you'. He meant it. He's not going to go scary stalker on you, but I'm pretty sure you're his as far as he's concerned. A more loyal and fierce friend, you may never have. Sometimes those traits trump his common sense, or his slightly tenuous grip on conventional moriality," he said wryly. "But. A hand to hold. A place to sit and be. Some witty conversation. He'd be happy to give those to you, too, if you need them."