Given Zach wasn't about to start dating anyone else - T was straight and that had just been that, and Ernie, well they got along, but he didn't seem to, and he wasn't interested in anyone else - he didn't really ave anything to reply to Romilda. Being how he was wasn't about having "arrangements" with a girlfriend. It wasn't an arrangement. It was love. It was just how he was. And it was complicated enough having his friends know.
Zach smiled and actually laughed a little bit. "I'm not asking so I can shag them," he replied, "And you've yet to say anything I don't already know so far." He smirked a little. Theo was a close friend. Pucey he had known about. And yea, Draco was straight - really straight. And a bit of a bugger.