"Running can be fun, if you're chasing something worth it," He answered. When she blushed he reached out and tucked a strand of hair behind her ear, "You look even lovelier when you blush, and it would only be gratuitous flirting if it weren't the truth. I'm simply... Observing."
After another drink he added, "Which isn't to say I'm not flirting with you, of course," and smiled brightly at her.