Well, as it says above 
Background. Ex OH and I split well over a year ago. I have now met a lovely kind man who is very much a part of my life, however, my two DC do not know yet. He also has DC's. Very similar ages. He split up with his ex even longer ago. Over 2 years. Neither one of us has introduced any other people to our DC's before. We are serious about each other and see a future together.
We now would like to move it to the stage where we 'come out' and let the DC's know that we are seeing each other. However both of us are somewhat petriefied and at a loss for how to do this. Neither of our exes is (openly) seeing anyone.
I really don't want to make a big deal of it, but also don't want to hide it anymore. The DC's are all in a range of 9-12. We are not planning on forcing any social get togethers were we all hang out constantly when we have our DC's but would gently like to introduce each other to our lives and DC's and do not want the DC's to be left behind as the relationship grows and then all of a sudden be introduced to the other person way down the line.
Thoughts or advice anyone?