A 30-year-old man has been charged with attempted murder after having sex with a 15-year-old boy and infecting him with HIV.

Keith ‘Keyoko’ Sumlin met the teenager online and invited him back to his home in Pembroke Pines, Sunrise, Florida, where they had sex.

Sumlin faces seven counts, including attempted second degree murder, lewd and lascivious molestation, and criminal transmission of HIV. According to the arrest documents, Sumlin met the victim through a “mobile phone app.”

Sumlin allegedly then posted on a social networking site that he had sex with a “little boy”.

He is accused of then writing: “I don’t use condoms when I have sex and you can call me sick, don’t worry about me, worry about who gave it to them.”

The teen learned of his exposure to HIV after revealing the encounter to a friend who had also been sexually intimate with Sumlin, and who later tested positive for the virus.

The boy told his mother who took him to Memorial Regional Hospital where tests confirmed he is now HIV positive.

Sumlin reportedly told police he had sex with the victim and knew that he was underage but claimed to use a condom.