1. In a large bowl, combine the diced watermelon, melon, cucumber, shallots, mint, and peanuts.
2. In a small bowl, whisk together the sesame oil, coconut aminos, lime juice, maple syrup or honey, and red pepper flakes (if using).
3. Drizzle the dressing over the fruit and toss gently to combine.
4. Serve immediately. Enjoy!