Diego, being a sly bastard he is, turns his head when she goes to kiss him on the cheek  so their lips meet briefly. He then smiles to the charming new comer and says to Dom,"Shall we depart then? I'm not sure where the Tower of Smoke is, but I'm sure this lovely lady will  show us."  The ex-pirate wanted any excuse to ditch, to be honest. Maybe they could find some decent rum or wine along the way.