He decides to go and look at the Sun up close. He can tell it's certainly cooler, so while the glow of her clothes is a bit blinding, he decides to go for it.
He was about to begin floating, but looks back towards the little girl floating around him. He doesn't want to leave her alone, especially with how pale she is, so he floats towards her and picks her up. Holding her securely against him, he makes his movement towards the sun.
Floating over was a bit of a journey itself, as there was quite a long distance. Going on his own would've still taken a while, but with one hand around his moon's diaper and the other pressing on her back, it took longer than it otherwise would have. Still though, he went closer, not wanting to make the progress go to waste.
He arrived at the little girl, and took in her sheer size. She appeared to be even bigger than he was expecting, and both he and the moon could fit inside her pockets. He floats around her, taking in everything.
Her skin was soft, and being this close had a nice warm aura, but not too bad for either of them. He had to stay away from her face, out of fear of being breathed in. He would easily fit inside of her, and the thought of getting stuck in the sun wasn't appealing.
Her long golden hear flowed gently, with it's own glow to it. He almost thought she could be attractive if she was older, with her cute childish appearance matching well. At this point he went down below, floating down under her skirt to take in the details there.
Under the skirt, there was a surprising lack of light. It was extremely dark, and he couldn't even see if she was wearing anything or not. If he wanted to check, he'd have to go up to it and feel around, or alternatively bring his own light source.