My brother has a kid with an ex girlfriend and she is a nightmare. She called my brother - who tried to do the right thing and be involved - "nothing but a sperm donor" and refused to let him see his daughter. Then she did everything she could to turn my neice against him. My parents and I tried to keep contact (the ex was better with us) but my neice turned into a copy of her mother and pretty much disowned us. Now, THAT is a nightmare ex!
Parents who bring their differences to their children are of the worst kind. My daughter thinks her mom is a superhero and I intend to keep it that way until she is old enough to understand enough to make her own judgement calls. -Magnus