Her pregnancy

Ave laughed. "The changes are natural; I am not sick." She assured him as she stroked his hair and face.

"But is it possible for a woman's body to change like that? I mean... just like that?" He scratched the back of his neck, his expression adorably baffled as he knew little to nothing about the opposite gender's anatomy.

He certainly had no idea it was possible for the breasts to grow and feel more alluring to the touch, but since she assured him it was nothing to worry about, he didn't dwell on it so much and decided to continue where he had stopped before he was distracted by the changes, only to reach and see that she had secured her blouse back with the strings.