The new relationship to children after a divorce? I ask this because my ex is wanting to introduce his girlfriend to our children. He's not planning on moving in with or marrying her. We made the choice to divorce 6 months ago but didn't physically separate until last month. I am engaged now but waiting until late spring to introduce the children to him. We will be getting married about this time next year. If I wasn't planning on marrying him I wouldn't be introducing him to them at all.