Should I have another baby?

I wanted to post this in sort of a safe space because I will DEFINITELY be judged by my friends/family. Here's the back story.

I was previously married, with the man for 5 years, and he lost his shit. It was a narcissistic relationship and he was doing drugs that I wasn't aware of until he took enough to drive through a building on purpose and do a bunch of crazy stuff. We had a daughter and she's 8 months old now, but obviously I left him and he bailed on his daughter and hasn't been relevant unless it is, literally, to torture me.

I started dating my current boyfriend at the end of July. He's been my life long best friend. I'm 23 and he's 25, we've been best friends since 5 and 7. We have a deeper, more beautiful and understanding relationship than anything either of us have ever experienced. (Both terrible childhoods, daddy issues, and narcissistic abusive exes.) He came in, swept me off my feet, and took in my baby as his own. I blame alot of our relationship on our prior almost 2 decades spent together.

We've got the baby fever. He wants a baby of his own, understandable since he's 25, and I'm more than willing to give that to him. Am I crazy? Should I do this? I feel like its a terrible idea because we've only dated 5 months, but also I don't feel like its that unjust since we've been side by side for 18 years. Opinions? 🤔