Stefan does notice it, following the direction of her eyes and letting them linger there for a moment while he decides whether or not he actually cares. Rebekah is already whispering in his ear, and frankly those ideas have a lot more promise, but for right now he'll toe the line between them.

"I'd hardly call it mine." There's a slow smirk at his words, before he glances down to her. "Though we were here first."