Stage one:
Butterflies.
[Is anything better than that fluttery feeling you get when you're first falling for someone new?]
That described Arianna's situation better.
"What?" Marcel chuckled when Arianna kept hiding her face and buried it in his chest, unable to look him in the eye without blushing tomato red.
"Stop it!" Arianna swatted his hand when he tried to lift her face.
"Come on, I want to see your beautiful face," He told her and finally yet slowly, she looked at him, going beet red in the face.
Intense gray eyes bore into shy yet glinting green eyes, Arianna didn't even realize she was drawing the map of the world on the floor with her leg.
"So beautiful," Marcel muttered, his fingers caressing her collar, leaving goosebumps in its wake while her breathing deepened.