The transgender roommate of Turning Point USA founder Charlie Kirk’s alleged assassin “hates conservatives and Christians,” one of his relatives told Fox News Digital.

The 22-year-old, who has not been charged, was in a romantic relationship with suspect Tyler Robinson, also 22, according to the relative, Fox News reported. She said the individual is in the process of transitioning from male to female.

“He hates conservatives and Christians,” the relative said. “He hated us. He was not raised that way, but he, over the years, has become really detached [and] been radicalized.”

“He has obviously gotten progressively worse the last year or two,” she said, he is “always very angry.”

The relative believes Robinson’s politics were influenced by his partner in the year they began dating.

“I think Tyler got a whole lot worse in the year they have been dating. They are big gamers, and obviously, they have that group that influences them as well as others. But my gut tells me [the roommate] did more of the influencing,” she said.

“Everybody in my family wants justice to be served and wants no part in this and wants whoever is involved in whatever way to have to pay for that,” she added.

Fox News Digital reported that an FBI official said Robinson’s roommate has been “extremely cooperative” and claimed he “had no idea” about Robinson’s alleged plans to assassinate Kirk.

But prosecutors say Robinson confessed to the killing in a chilling text exchange with his trans lover just hours after allegedly carrying out the assassination.

Less than three hours after the Sept. 10 killing, Robinson told his live-in partner, identified as Lance Twiggs, that he had been planning the shooting for a week, according to an indictment filed Tuesday.

Robinson messaged Twiggs to “drop what you are doing, look under my keyboard” after firing from a rooftop at Utah Valley University in Orem, Utah.

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Twiggs then found a note from Robinson that read: “I had the opportunity to take out Charlie Kirk and I’m going to take it,” prosecutors said.

Robinson was charged Tuesday with aggravated murder, felony discharge of a firearm causing serious bodily injury and obstruction of justice — three of the seven total counts filed against him.

The indictment alleges Twiggs knew about Robinson’s alleged role in the assassination more than 24 hours before he was arrested.

Twiggs, whom authorities described as a male transitioning to female, immediately texted Robinson asking if it was a sick joke.

“I am still ok my love, but am stuck in Orem for a little while longer yet. Shouldn’t be long until I can come home, but I gotta grab my rifle still. To be honest I had hoped to keep this secret till I died of old age. I am sorry to involve you,” Robinson allegedly replied.

When Twiggs asked directly if he was the one who killed Kirk, Robinson texted: “I am. I’m sorry.”

In later messages, Robinson admitted stashing the murder weapon — a scoped .30-06-caliber hunting rifle belonging to his grandfather — in nearby bushes after changing clothes.

He told Twiggs he had planned to retrieve the gun, but police had locked down the area.

“I’m worried what my old man would do if I didn’t bring back grandpas rifle … how the f— will I explain losing it to my old man,” Robinson allegedly wrote.

Twiggs has not been charged with a crime and remains cooperative with investigators.

“[Y]ou are all I worry about love,” Robinson wrote in another message before turning himself in to police.

Prosecutors said they will seek the death penalty if Robinson is convicted. The punishment could be carried out via firing squad under Utah law.

Gov. Spencer Cox first vowed to pursue the death penalty just hours after Kirk was gunned down.

Prosecutors added that Robinson held “leftist ideology” and had been “radicalized” online in recent years.