"I'm... Andrea," she replied softly. Before she could say any more, Molly had pulled her in for a deep kiss, with tongue. For a moment, Andrea questioned whether she should explain to Molly what happened, but then realized this was what she'd dreamed of, so... why not go for it?
Her pheromones were driving her crazy, and given Molly's lustful expression, the same was true for her. Molly pushed her down, and pulled off her male clothing rapidly, not even noticing they were boy's clothes. Before Andrea knew it, she was lying there naked in the secluded back room of the arcade with Molly kissing her neck and making her shiver with excitement.
Her arousal mounted as Molly's lips moved down to her chest, kissing at her boobs before seeking out a nipple and beginning to suckle her, causing Andrea to first pant, then whimper with excitement, her arousal further mounting as she noticed Molly pulling down her panties and slipping a finger up her skirt.
Andrea tried to reach up and play with Molly's boobs, but then her lover put a hand on her crotch and ran her thumb up the surface of Andrea's moist pussy, and she gasped and went still. This felt so good. Indescribable. So good she didn't have words for it. When two of Molly's fingers slipped through her lips, Andrea shivered and closed her eyes and bit her lip and launched into a series of delighted, stifled moans, the soft, teasing lips on her nipple adding to the intense arousal.
A part of Andrea's mind was telling her that this was wrong, that she should be trying to convince Molly he was a boy, that if he were to have sex it shouldn't be like this. But most of her didn't care: this felt better than anything she'd ever experienced as a boy. Molly's soft moans in between suckling her nipples and the thrusting of her lithe, warm fingers intensified things, and when her thumb started rubbing circles around the pearl-like nub of her clitoris, Andrea couldn't hold out any longer. Her mind was awash with bliss for a few long, long seconds. She never wanted to be a boy again! She wanted to be Molly's lover and feel this forever! Becoming a girl was like going from a caterpillar to a lustrous butterfly!
As she came down from the high, Andrea was greeted with a sight almost as wonderful, if not moreso: Molly panting and moaning with pleasure as her own fingering, and Andrea's unconscious massaging of her chest, pushed her to her own limit. She collapsed happily onto Andrea's soft chest and looked at her lovingly, as the two lay in a haze of Sapphic bliss.