He chuckles into the kiss in agreement with that sentiment and then lets himself sink into the kiss. For the moment, he's not really thinking any further than just reconnecting and enjoying Ianto's love - the love that he still has, as a contrast to all those past loves in the box.
Not, at least, until Ianto pulls him closer and he feels Ianto's cock stir against him, his own twitching in empathy. He grins against Ianto's lips and drops his hands to Ianto's ass to pull him in tighter, bodies flush against each other. And slides his mouth round to murmur in Ianto's ear, "Am I going to have to get out that cock cage at last, Mr Jones?"
They haven't actually got around to using it yet, after all. It would seem a shame not to make use of it before Ianto's bet with Spike expires tomorrow!