At my girlfriend’s house, I hear a man moaning and peek in to find her older sister happily teasing his nipples. Days later, she reveals that she saw me watching and claims she can spot a man with sensitive nipples by his face. She pounces without warning, mercilessly plays with my nipples, and smothers my moans with deep tongue kisses. Even during sex she works my lips, nipples, and cock at once, leaving me hooked on her and forgetting all about my girlfriend.