In the latter case, they come from an extremely religious and homophobic family. At a 10-week scan, it was discovered that both ova had successfully attached to the surrogate’s womb, but one of the fertilised eggs had split, which resulted in identical twins. And others, for instance, have documented twins actively interacting in the womb with one another. It’s unlikely there is just one path to being gay, even genetically.
When one monozygotic twin is homosexual, the other twin also identifies as homosexual about 75% of the time. I know identical twins. The couple were advised by most doctors to terminate the twins to avoid potentially dangerous compilations but with the help of a willing doctor at sunninghill hospital in johannesburg they persevered.