My friend's older sister is too innocent and pure! She rides me while grinding her hips forcefully, and even though I'm being forced into it, I keep reaching orgasm. It's terrible! As punishment for unilaterally creating a girlfriend, she fully unleashes the grind in a cowgirl position, making me release my pleasure into her over and over again. The happiness is sending me to heaven. From now on, I won't be able to reach orgasm without grinding!
