The best way to rekindle romance?

My boyfriend and I just had a baby and we have only been together for 18 months. We didn't plan on having a baby this early but it happend and we accepted it. We both are having a hard time adjusting to our new life and tend to get one each other's nerves often...plus we never have anymore. It's only been a month since our son was born but I would like to know what we can do to get back what we had (which was a fun and great life)?