Questions & Answers about Мы любим переписываться в чате вечером.
The -ся ending often turns a verb into a reciprocal or reflexive action.
- писать = to write (something)
- переписываться = to correspond, to exchange messages with each other
In Мы любим переписываться в чате вечером, the idea is “we like writing back and forth / messaging each other,” not just “we like writing.” The -ся shows that the action is mutual between people.
писать is very general: “to write.”
- писать письмо – to write a letter
- писать сообщение – to write a message
переписываться specifically means “to correspond / chat (regularly or back-and-forth).”
It already includes the idea of exchange and usually more than one message over time.
So переписываться в чате suggests an ongoing chat, not just writing a single message.