making it work
You can have both families spend lots of time together. My husband holds hands with our GF in front of all the kids. At first they cocked an eyebrow, but got used to it over time. Her kids are 9 and 14. Now, hugs, holding hands, evening walks mean nothing to the kids, it's now a normal thing. We are just conservative about more intimate contact for now, until the kids are older. We too are cautious. We are taking our time. We plan to stay together for life. So far so good. Good luck.