[He doesn't mind the clinging, doesn't mind the unusual brightness of Porthos's eyes -- only holds on for as long as he needs it, as long as they both do.
And when he finally steps back, it's with a small, understanding smile and no words, no apologies, no I wish you'd known her longer, I wish I could've met her too, your dad was a dick and you'd have deserved better. Porthos knows everything he could say, after all, but none of that is what he needs to hear.
What he does say, in the end, is a quiet, heartfelt,] I'm sure your mom would be proud of you, too. [Like you're proud to be her son, she'd be proud that you're hers, too.]