"'Sarah is everything to me and I wish everyone in the world could feel this amount of love'," says Steve. '"We love each other desperately. We are best friends, soul mates, business partners - ...it''s love, actually'," explains Sarah. There's just one problem: Steve is Sarah's biological father.

Sarah met Steve when she was 29. Sarah was adopted at birth and was raised in a happy loving family. She says her adoptive parents are her only Mum and Dad: "'We don''t think of ourselves as father and daughter. We may have the DNA link showing that we are blood related, but that feeling is reserved for my dad who brought me up and took me fishing and bounced me on his knee and taught me right from wrong.'"

Sarah and Steve say they were never a hundred per cent sure that they were actually biologically related. Moreover, the two are united in their critical view of incest. "'It''s an abusive violent crime against a child in my view. The law should reflect that,"' states Steve. 'But the couple maintain that their relationship is different. "Why should we have to carry that stigma?" Sarah asks. 'We are well into our mature years with grown up children...It''s not fair.'"