Have I moved on too quickly?

I got dumped a couple weeks ago (end of September) after 18 months of dating and I was so broken for a week roughly but I have fantastic friends who were there for me and supported me. Anyways he's still sulking over it for some reason but I'm fine to be honest. I care for him as a person and hope he does well in life but the emotions seem to be nonexistent anymore. I don't feel sad or hurt or angry anymore. Is it wrong if I start putting myself back out there in the dating world? Or no? Advice please!