Is it normal for exes to exchange good nights?

My ex-girlfriend and I had been separated for six months now over third party. She cheated on me and it took me months to forget about the pain she had caused me. Yet, it seems like I still haven't moved on because just recently, I found myself chatting with her. Luckily, she replied and now we're exchanging late night messages and even good nights. Every time I am chatting with her, I can feel a foreign feeling inside me. Is that even normal?

I think so. But I will suggest to do that after you move on from her completely. Or else it will get worse 😔