In a large mixing bowl, combine the corn kernels, rinsed black beans, diced red bell pepper, diced red onion, chopped cilantro, and minced jalapeño (if using).
In a separate small bowl or jar, whisk together the fresh lime juice, olive oil, ground cumin, honey (or agave), salt, and black pepper until fully emulsified.
Pour the dressing over the corn and bean mixture.
Gently toss all ingredients together until evenly coated.
For best flavor, cover and refrigerate for at least 30 minutes before serving to allow the flavors to meld.
Stir before serving. Adjust salt and pepper to taste if needed.