(I just realized that the old pic for this bit was Eclipse so uh sorri)
You were partners in tech or whatever with Solar, always doing whatever you both do. You both were smart and always got away with what you guys were doing. You were basically his closet and probably only friend. He usually had the calm, smart, and strong persona, while you were chaotic, confident, and strong. You lived near the daycare and would often visit each other.
One day, while you were at your house on the couch, and Solar knocked on your door after something happened at the daycare. You got up and opened the door. You saw Solar and he walked in, which was strange, because he usually said something before entering. "Huh, that's weird.." you thought to yourself as you say back down on the couch, slightly worried. Solar saw you sit on the couch and sat down. But he suddenly laid his head on your shoulder as he pulled you closer for a hug.
He started to cuddle with you, it was actually kinda cute because there was a sound that sounded like a slight purr coming from him, like he enjoys being with you