Suit yourself.' Sadie shouldered her pack, then helped Annabeth up. 'You say Carter drew a hieroglyph on your boyfriend's hand. All well and good, but I'd rather stay in touch with you directly.' Annabeth smirked. 'You're right. Can't trust boys to communicate.' They exchanged cell-phone numbers. 'Just don't call unless it's urgent,' Annabeth warned. 'Cell-phone activity attracts monsters.' Sadie looked surprised. 'Really? Never noticed. I suppose I shouldn't send you any funny-face selfies on Instagram, then.' 'Probably not.' 'Well, until next time.' Sadie threw her arms round Annabeth.