Darren John killed to protect his gay secret. That's what British prosecutors believe, anyway.

The 23-year old chap currently stands trial for the 2005 murder of his girlfriend who allegedly freaked after finding his homo porno. Said prosecutor Sallie Bennett-Jenkins:

There were a number of texts and photographic images of a homosexual nature on his phone.

It may be there had been a dispute between the defendant and [Amanda] Bentsi-Addison which may have driven him to kill her.

John plead guilty to stabbing his 26-year old lover, but claims the attack came after she told him she wanted to see her ex-husband. John also claims to be mentally ill.

Now, we're not lawyers, but it seems the motive matters less than the murder.