Refreshing Watermelon and Tomato Salad

Ingredients

• 4 cups watermelon, cubed
• 2 cups tomatoes, diced
• 1/2 red onion, thinly sliced
• 1/4 cup fresh mint leaves, torn
• 1/4 cup feta cheese, crumbled
• 2 tablespoons olive oil
• 2 tablespoons balsamic vinegar
• Salt and pepper to taste