Shocking, Harry has actually managed to grow up some in the intervening years. Not much, but some. He's still sorely tempted to make a joke about how 'exceedingly common' he is, and the words are on the tip of his tongue when Draco mentions that he'd been married.

"Another me isn't all that interesting, as I'm sure you'll agree and tell me at length, but I'm ...Malfoy, if there's anything I can do, to help you find him or find answers, you know I'll do it." He might only be able to awkwardly tolerate Malfoy at the best of times, but the offer is genuine.