My ex-boyfriend texted me during the Spring Festival!

That means he still misses the past. Maybe he wants to see if there is any possibility of getting back together. If you don't want to get back together with him, I think it's better not to reply. Even if you reply, it is just a simple blessing or thanks. If he continues to send you messages, I don't think so, otherwise it will do you endless harm.

Go back if you want to get back together, but you must not let him feel that he wants to be separated from you. He wants to make up with you. It's not that cheap You should grasp and control him, don't be controlled and passive by him. So, first of all, you should consider whether it is necessary to contact or get back together with him.