After kissing Pansy and Polly goodbye, as Polly yelled no at his leaving Harry quickly made to the party. He still wasn't keen on parties but knew Ginny would kill him if he missed this.
Plus he was still curious about Neville's question.
Pansy had been alright with his going, he was pretty sure though that it was because it gave her a chance to buy him new robes. And it got Ginny that closer to being safely married off.
Walking around Harry saw Neville walking around and went over to join him. "Hey mate enjoying your party?"