Imagine two kids standing side by side on a playground, but they're not moving. That's like two planets orbiting the sun in a co-orbital configuration.
Now, let's say one kid starts walking forward while the other kid stays in place. Eventually, the first kid will catch up to the second kid and they'll be standing next to each other again. This is what happens with co-orbital planets, except instead of walking they're orbiting around the sun.
In a co-orbital configuration, two planets are orbiting the sun at the same distance, but at different speeds. They're close enough to each other that their gravity pulls them towards each other, which causes them to "dance" around each other in their orbit. This dance can last for millions of years, or until one planet's gravity becomes stronger and pulls the other planet into a different orbit.
Co-orbital configurations can be very rare and interesting, as they show how planets can interact with each other in unique ways. But don't worry, even though it sounds complicated, it's just like two kids playing together on a playground!