Balthier chuckled softly. "Ah. I see. You know, it's just the nature of things." "What?" He couldn't have figured it out so easily, unless he too recalled her slip of tongue those days ago. "That you would fall for me..." Ashe wants their relationship to go beyond the physical aspect.
"You see, Princess, each scar is a souvenir, a little reminder of an incident in the past." It's not much, but at least she gets to know something more about him. A continuation of 'Nature of Things'.
Ashe wants to see if Balthier lives up the the reputation that seems to follow him wherever they go. After all, if she has not had a man since her husband, why not take one that was said to be quite the lover?