I have been in the situation before I started dating my wife, the woman and I had an agreement, I would not meet the children until we had decided to take the relationship somewhere that required it. This was relatively easy because she has split custody with her husband, I don't know if that is your case. The nice thing is that it kept the relationship between her and i, when things didn't work out, I was breaking up with her not her and children I became attached to. We dated for about a year. We are still friends and I think I might have met the children a time or two, but it was always this is my friend. Just my eperience it may not work the same for you.