I have had my 2 children living with me for 3 years as the mother moved away and didn't want to make them leave their friends. They are aged 13 and 15. My family is a blended family of 7. This includes my 2 boys, my partner's 2 children and one we had together. The boys' mother has now returned and is demanding the boys back as if there is no choice in the matter. There is no custody agreement as at the time we both agreed it was best for them to stay with me ( custody of children). Child support have me as the custodial parent. I love my boys and would never deny them spending time with their mother but both families agree I should be the custodial parent. I understand in the past the mother would normally be granted custody but I know things have changed and would really appreciate an understanding of my rights.