Water Park Victim Caleb Schwab Is In Heaven Enjoying 'Endless Amounts' of Chocolate Milk, Friend Says

Water Slide Victim Caleb Schwab Remembered by Teacher and Friends: 'He Was Very Tenderhearted'

Caleb Schwab, the 10-year-old boy killed in a horrific water slide accident at the Schlitterbahn Water Park in Kansas City, knew there was a heaven and he knew exactly what it would be like there: lots and lots of chocolate milk.

Caleb's friend Jack Sloan, 10, told his mother Robin Sloan about the conversations the two boys shared during their days attending Sunday School together at LifeMission Church in Olathe, Kansas.

"They talked about heaven," Robin Sloan tells PEOPLE. "Jack loved chocolate milk. [He and Caleb] said there would be endless amounts in heaven."

Caleb died Sunday while on the Verruckt (German for "crazy" or "insane,") the world's tallest water slide.

While the cause of his death is still pending, funeral arrangements were released. Visitation for Caleb will be Thursday from 6 to 8 p.m. at LifeMission Church in Olathe while a memorial service will be held Friday at 2 p.m., according to a Gofundme site created to help pay for the funeral.

His pal Jack, who will be a fifth grader, described Caleb as a "nice, happy kid," Robin Sloan says.

"He was a hugger," she says of Caleb. "He always hugged Jack whenever he saw him."

Caleb loved sports in general and baseball in particular, Jack relayed.

Caleb also was devout.

"Caleb knew Jesus, and he's there [in heaven,]" Sloan says. The two friends didn't doubt the power of prayer. "They knew if someone was sick, they would just pray for them," she says.

Sloan said it was difficult having to break the news of Caleb's death to Jack and her other two kids.

"I told him there was an accident at Schlitterbahn and someone got hurt," she says. "He asked if they were going to make it and I said no."

When Jack learned it was Caleb who died, he was devastated. "It's hard for him," Sloan says. "He was in his room sad and crying."

Prayer is offering some comfort to her family, she said, and Jack is taking solace in his faith.

"He knows that he will see him again," Sloan says. "He said, 'It's not forever sad, it's just temporary sad.'"