They're a cute couple! This is a very playful and happy set, but it suffers from several technical problems. I'd also suggest stepping back to allow more of your subjects into the FOV (or maybe you're cropping too closely).
#1: chopped head/hands, overexposed parts, OOF face
#2: Good expression and emotional elements, chopped head/hands, overexposed areas, OOF, background elements a distraction, debris on girl's shoulder
#3: Nicely spontaneous and lively, wish I could see her eyes, blown out sky, tilted horizon is distracting