Ex cameback after telling me to leave him alone. They really do comeback.

So, a month ago I posted something here about my ex saying to leave him alone. So I did. I did moved on. Hours ago, he called me and told me to come over his new place. This is 5 months after no physical contact. We just f*ck*d like our messy breakup never happened. We're still not talking about it. Now that I'm finally moving on, he would go back to my life. Lol. But anyways, I'm only here for a hookup not because I miss my ex. I'm only here because I don't want to f*ck no strangers. They come back, just don't chase them and try to move on too. They comeback but not for healthy reason.