Caught Sis Cheating on Her Bf - Used to My Advantage

*Stepping into the shadows, I silently witnessed my sister's indiscretion. She was passionately kissing another man, oblivious to the fact that her action was anything but discreet.**As they grew more heated, my heart raced with a mixture of desire and anger. My sister had always been off-limits, but now she was offering herself to another man.**Deciding to take advantage of the situation, I boldly revealed myself. Their kisses broke as they both turned to face me, shock and confusion etched on their faces.**Without breaking eye contact, I slowly unbuttoned my shirt, revealing my toned torso. My sister's cheating partner followed suit, undoing his own buttons. The tension in the air was palpable.**My sister's eyes widened, realization dawning on her as we approached the venue for our long-awaited family reunion, where old wounds and unspoken words threatened to tear us apart.