Every family has its quirks - but they're not usually anything to worry about. However, one woman has caused a stir after revealing her daughter's older 'half-brother' is actually her biological father.
Taking to The Atlantic's Dear Therapist column, the woman explained how her husband had two children with another woman before they met. After tying the knot, the couple started trying for their own child together - but this didn't work out as her husband's vasectomy could no longer be reversed.
To make sure their child looked like them, they came up with an unorthodox solution and kept their daughter's true conception a secret for three decades. In a letter to the Atlantic, the anonymous woman wrote: "We didn't want to use a sperm bank, so we asked my husband's son to be the donor.