"Nice to meet you too." Was barely out of his mouth when Dawn's attention shifted to Tim. Dean wouldn't have been insulted if most of his attention hadn't shifted quite quickly towards Buffy. He looked at her for a moment, trying not to think about how suddenly awkward he felt seeing her because ... well, he liked her and being around her sister-because well, ... he actually cared if Dawn didn't like him-and attempting to focus on how hot she looked. Because she did. Strangely enough it was a bit harder than it should have been. Which he, weirdly, he didn't dislike as much as he should have. Since Dean Winchester didn't do awkward. Or hoping that little sisters thought that he was good enough for older sisters. He just didn't. ... but he could?
His attention cut to Tim, "Hey." A nod in his direction before taking up the seat next to Buffy. "Mind if I sit here?" He asked, smirking, even as he lounged out next to her. Barely giving her a chance to say something about that he turned towards the teens because Dean could multi-task like that, and asked, "What about water wars?"