Justice in the UK apparently regulates all kinds of things.
The 41 year-old had been in a relationship with a man whom he lived with and told officials "it would make me feel happy" for it to continue.
But his local council decided his "vigorous sex drive" was inappropriate and that with an IQ of 48 and a "moderate" learning disability, he did not understand what he was doing.
A psychiatrist involved in the case even tried to prevent the man being given sex education, on the grounds that it would leave him "confused".
Mr Justice Mostyn said the case was "legally, intellectually and morally" complex as sex is "one of the most basic human functions" and the court must "tread especially carefully" when the state tries to curtail it.
But he agreed that the man, known only as Alan, should not be allowed to have sex with anyone on the grounds that he did not have the mental capacity to understand the health risks associated with his actions.
Oh, come on. Fruit flies can have sex; it's not something that requires a great deal of intellectual capacity to perform adequately. And I think the man understands sex perfectly. "it would make me feel happy" is a beautiful reason to do it.
And deciding to enforce unwanted celibacy on someone because they aren't educated enough to understand the consequences while also refusing to educate him is grossly injust.