One feeding would hardly be enough. Since the "psychological" approach had obviously worked perfectly with Severus, the trio decided to keep at it. During their classes, Ron sometimes singled Zabini out. Hermione nudged him towards Harry, and the young parsel-mage used every chance to touch the Slytherin. He steadied the boy when he "accidentally" tripped over a root. He held him back when he wasn't attentive enough in Care of Magical Creatures or simply brushed over his back when passing him. They spaced it out, never crowding the Italian, or even speaking to him beyond a few comments in class. However, over the next two weeks, the young snake started to drift towards them. For an incubus, Zabini seemed uncommonly starved for affection. Every time he got close, entirely on accident, of course, Harry "rewarded" him with an absent-minded caress, before turning back to what he was doing. They made sure nobody noticed.