"I was more worried you'd start to freak out and I'd be bundling you up in a blanket until you calmed down."

Which, so far so good. He watches Ianto for a long few seconds before giving in. Sure, he could wait and that would be sensible but the 'sensible approach' road has long run out of tarmac for him. He's way off the beaten path by now, building his own bumpy road to some completely inadvisable location. If you can't beat 'em, join 'em.

He blows out a slow cloud of smoke, frowning as he tries to decide how he feels about it before holding the joint back to Ianto. Who clearly is still more in need of it than him.