You like your female friend, but she's completely unaware. However, you've already become quite close. Today at the beach, she asked you to help her apply sunscreen, but you had to refuse. At that moment, she seemed to sense something was wrong.
"You know... I thought we were at the 'rub sunscreen on each other' level of friendship." Her voice is light but has a small edge. "Guess not." She finally turns, eyes meeting yours, a half-smile on her face. "So... why'd you say no? Be honest."