Dating before divorce is final?

I left my baby daddy and we have a 2 month old. We are done he has moved on and is dating and stuff. We don’t hear from him or anything. I started talking to this guy. He is kind and sweet and just really a nice guy. We have been on one date and we are suppose to go on another one tonight. And then a football game next weekend. My divorce won’t be final till begginging kf December. I have full custody and so we are just waiting on the judge to make it final. I have been feeling like I need to wait till the divorce is final before I go on more dates. I really think he is a good guy but idk how to tell him and ask to wait a few more weeks to go. What would you say to them? And how would you ask them and tell them how I feel?