She leaned against him as he pulled her closer. Ran dressed very conservatively, so this might be the first time he got a good impression of her body - including a large pair of breasts.

"It's exactly what you think it is, Tetsuo. I like you. I..." she gave him another brief kiss, "like..." and another, "you."

That should make her feelings clear, beyond even his self-deprecation. She didn't care if he thought she was "too good" for him. She liked him, wanted him, and that was that.