"Oh. My. God." Lucy's jaw dropped a little and she stared at her brother and Buffy. Did she have anything against the Slayer? Not really. Buffy hadn't beaten her up, so...Lucy was cool with her. She wasn't even jealous about the time Ash spent with her as her Watcher. She was just that secure in their relationship.
But now she was hooking up with Kev?
"Well..." she said under her breath, glancing over to Ash...in part because she was just speaking to him and in part to gauge his reaction, "At least we know now that he wasn't leading her on?"