My husband and I have been together for 7 years. He has a 9 year old daughter with his ex-wife who has had a domestic partner (boyfriend) also for 7 years and they have 2 children together. Everything has gone reletively smooth over the years.......in large part because my husband and I in particular have been very flexible. We have also been so because his ex-wifes boyfriend has been a good example on her and she seemed to be a bit better. She is not a bad person, she has a bit of a stunted emotional growth and isn't always capable of seeing things outside of her basic needs.