Texas church shooter Devin Patrick Kelley would reportedly stalk underage girls and bribe ex-girlfriends to date him.

Speaking with NBC News, Brittany Adcock said she was 13 when she dated Kelley, who was 18 at the time. She also claimed that Kelley, 26, would harass her when she broke off the relationship.

“He somehow would always find out my number although none of my friends talked to him and he would constantly call me until I blocked his number,” Adcock, 22, said.

“Then I’d get calls from an unknown number so I’ve had to change my number quite a bit.”

Adcock also said Kelley would offer her money to hang out with him. She recalled one instance where a now-married Kelley contacted her and said she should move in with him and his wife and that he would take care of her if she walked around topless.

“Not long after, his wife messaged me and asked why I’m talking to her husband and I told her what he was saying and sent her screenshots and she then apologized and then I was blocked from speaking to her,” she recounted.

Another former girlfriend, Katy Landry, also claimed that Kelley stalked her and bribed her to hang out after they broke up.

“That was another thing about him—he was very sick in the head…He would tell me very sick strange things,” Landry told NBC, but didn’t provide additional details.

Landry also accused Kelley of assaulting her. She claimed he would repeatedly call her and say “really weird stuff.”

The New York Post noted that Kelley was kicked out of the Air Force for beating his wife and child in 2012. The shooter would go on to marry Danielle Shields in 2014.

Authorities are investigating whether Kelley was motivated to kill 26 prisoners at First Baptist Church because Shields’ family attended the church.

[Featured Image: Texas Department of Public Safety]