Dean's tight, polite smile and the way he took a step back from her as if she were a prowling tiger dashed cold water (metaphorically this time) over Lucy's brief flutter of interest. She enjoyed flirting and would even admit to liking it when she left boys flustered - but only when it was the good kind of flustered. Not the kind that implied a girlfriend who would definitely not approve of scantily-clad attempted rescuers making moves on their other halves.
"I'm sure I can find a pool nearby," she said, making the refusal polite. "Assuming I can find the hours in the day. I've been staying with Susan for... a month? And this is the first time I've used the pool. I probably shouldn't be signing up for more commitments until I know I can stick to them."
Lucy gave him a warmer smile at his laugh - and the mention of his sisters and their (potentially) shitty boyfriends. "At least you look like you could be scary," she pointed out, gesturing at herself again. "My sisters' boyfriends never take me seriously until it's too late." Lucy rarely got physical with creeps hitting on her sisters - but more than one had experienced the sharp edge of her tongue and the thunder of her righteous anger. Maybe there was a reason she and Susan still got on after all this time.