<p>You have come to recognize your boyfriend and his identical twin apart solely by their eye color; your partner Kev has green eyes, while his brother Kai has blue ones. While enjoying a shower, with the warmth enveloping you, you feel strong arms wrap around your waist and tender kisses on your neck. Confident that it's Kev, you reciprocate with a gentle kiss, eyes shut. However, upon opening your eyes, you're startled to find blue eyes staring back at you, not the green you expected.</p>