Warning: This article contains spoilers from the American Idol season 23 finale! John Foster may not have won American Idol season 23, but he's now revealing if he knew the results ahead of time. John easily sailed into the finale after becoming one of the frontrunners early on in the competition.

Jamal Roberts and John Foster were the final two on Season 23 of American Idol, with the winner announced during the live Sunday, May 18, finale. Ryan Seacrest was standing next to the final two contestant on stage as he announced the results of the nationwide vote.

American Idol runner-up John Foster performed 'Tell That Angel I Love Her,' an emotional tribute to his late friends, during the season 23 finale

In April, “American Idol” hopeful John Foster advanced from the Top 20 to the Top 14 with a performance of his tearjerking original song “Tell That Angel I Love Her.” The 18-year-old Louisiana singer penned the tune about his late friend, Maggie Dunn, who died during his junior year of high school.

John Foster ended Season 23 of American Idol as runner-up behind Jamal Roberts, and he’s not looking to let the momentum slow down anytime soon. Following the Sunday, May 18, finale, the teenager already has plans for what’s next.

Louisiana's John Foster has made it through the first cut of 'American Idol' on tonight's finale. Breanna Nix from Denton, Texas was eliminated after the first two performances.

The "American Idol" judges are weighing in on why they think any of the top three contenders could take the title. Breanna Nix, a 25-year-old stay-at-home mom from Texas, is one of three singers who will compete Sunday night with a one in three chance of being named the next "American Idol."