Your girlfriend, 'participating'

As you near a corner you hear some commotion from out of view. You decide to peek around rather than run in guns blazing and what you see shocks you to your core.

Your precious girlfriend of multiple years, a woman you believed couldn't hurt a fly, was crouched a few feet in front of you squeezing the life out of some poor guys balls who was wriggling around on the floor trying to escape her grasp.

After what feels like an eternity of watching her slowly crush his testicles, the right one pops between her fingers and she focuses all her attention on his left while giggling to herself, completely ignoring his shrieks of agony. The poor fucker hadnt passed out yet.

You come to your senses after the shock subsides and know you must make a choice.