Steven Paul Boone, 29, who is charged with nine counts of aggravated sexual assault for spreading HIV, all traced back to casual encounters with one victim in January, 2010. (QMI Agency)

OTTAWA - A 21-year-old man with the mind of a child told police in a videotaped interview that Steven Boone twice tried to force sex on him when all he was looking for was someone to love him.

The key witness in Boone's second trial on charges including trying to kill with HIV is now 23 but is mentally a 10- to 12-year-old, according to his mom.

He met Boone on Facebook then had him sleep over three times.

He said he wanted to cuddle, but Boone forced oral sex on him and tried to have sex with him even after he'd told him he didn't want to and struggled to get him off and escape.

The young man — who remains HIV negative — testified Boone didn't disclose his status and never put on a condom.

"How did I get this disgusting pig on my bed and let him to stuff to me?" he said tearfully in the statement.

He wanted to give Boone a Valentine's Day teddy bear with the word "love" inscribed on its heart.

"I was waiting for the perfect person to come along," he said in the statement. "I thought it was him."

But he admitted under cross-examination that while he said he felt pressured to "talk dirty" with Boone, it was he who really initiated much of it.

He admitted he penetrated Boone — with a condom — and that in graphic MSN chats he asks for acts he later complained Boone forced on him and tells him to make the first move because he'll be "a little shy."

"You can do anything you want with me," he wrote.

"Really?" Boone replied.

"Really," he wrote. "Anything."

That was just talk on MSN, he told Boone's lawyer, Ian Carter.

"In person, I didn't like it," he said, later adding, "I changed my mind."

After being convicted last month of charges including three counts of attempted murder, the self-described "poz vampire" who chatted on MSN about how infecting others with HIV turned him on is now on trial on charges involving the man in April 2010.

Boone, 31, has pleaded not guilty to sexual assault, attempted aggravated sexual assault, attempting to administer a noxious thing and attempted murder.

At issue is whether Boone had contact with the man without consent, whether he tried to penetrate him and whether he intended to infect him with HIV and kill him with the virus.

The trial continues.

megan.gillis@sunmedia.ca