The Entrapped Two

The heat began spreading all over his body. It didn't bring him any discomfort; on the contrary, it felt quite good. He felt as if he was bathing in a slightly warm water. After the lightly unbearable heat at first, he was quite relaxed.

He felt that all of his pores had opened. Letting out a long breath, the heat inside him made him really comfortable.

That feeling lasted for tens of seconds, and then, he felt light and weightless. His brain stopped working to enjoy that floating feeling.

But before long, he couldn't stay calm anymore, because the heat in his lower abdomen had been growing stronger and stronger. Gradually, it had nowhere to go, and accumulated in his lower belly.

He felt dizzy and thirsty; his throat was dry. He was eager to vent the burning hotness in his lower belly, but didn't know how.

That unpleasant feeling made his mind slightly clearer.

Why did he now feel as if he had taken some kind of aphrodisiac potion?