Detta had spent the majority of the summer attempting to drag Gavin... anywhere. She wasn't an idiot. She knew what he was doing: slowly becoming a recluse giving his attention to his guitar and his pot and, more recently, coke. He hadn't admitted any of this to her, but Detta had considered Gavin one of her best friends since first year. She knew better than to actually listen to him when he said he was fine.
With an open invitation such as this, she wasn't about to miss an opportunity to get him out. So, she arrived in stark contrast to Gavin in blue while he was in black. She sighed as he muttered something about this being a stupid idea. "You're going to have a good time if my life depends on it, Gavin."
Naturally, if Detta was dragging Gavin to this sort of thing, Gavin dragged Matt along too. He needed someone to save him.