Anyone that is iffy on cold soups and especially fruit and veggie combos needs to try a basic gazpacho. Half of a watermelon, 3-4 roma tomatoes (or any big and juicy varieties), half a medium red onion, a whole bell pepper, half a large cucumber (persian or english works great), minced garlic, black pepper and paprika to taste, either red wine vinegar or balsamic, a glug of olive oil, add salt to taste. For ease of blitzing do it in stages, watermelon and diced tomatoe into the blender first which yields a lot of liquid, then followed by chopped/diced veggies. Blitz until it's a nice smooth consistency.
Chill this bad boy in the fridge then eat as needed (this is especially great for y'all trying to stay cool during the heat wave). You can also garnish with diced cucumber, tomato and some croutons for added texture.
It's a lot like having a savory dish with a sweet sauce on it plus the acidity of tomato and vinegar, the onion and garlic add a nice alium zing to it with bell peppers rounding it out with cucumbers for a nice vegie finish (that kind of 'green' I guess back taste to fresh salads).