THERE are few taboos left in the world, but committing incest is one of them.
Having a sexual relationship with a close member of the family is against the law, but some people find themselves falling into them anyway.
Several have shared their stories on Reddit threads, and they are all highly emotional.
One man reveals he's been in a sexual relationship with his twin sister for a year.
The pair were 17 when it began and he can't think of any reason why they have been drawn to each other.