Kiss Louise's beautiful lips.

John could no longer resist the lustful grin that had been on his sister's lips since she'd touched him. Her breast still in his hand, he leaned forward and pressed his mouth against hers.

He waited while she adjusted herself to the reality, that her big brother had kissed her, and only took a moment for her to return the gesture. Before long, their lips were parted, their tongues dancing in each other's mouths. John felt his pleasure growing as he tasted his teenage sister's saliva, unsure how much longer he could last in the embrace.

Continuing to fondle her breast while they passionately kissed, he began to feel the impending point of no return. Her hand running up and down his member had felt amazing enough when she'd started; now, her breast in his hand, her lips sucking his, he knew there was no way to hold back now.