Poor, poor Kourt.
The source says of Disick:
Last night's show had its fair share of Idol alum in the audience — including season three runner-up, Diana DeGarmo and season five's pretty boy, Ace Young!
The lovebirds' relationship got skyrocketed to the next level during last night's finale, when Ryan Seacrest brought both Ace and Diana up on stage for a surprise PROPOSAL!!!!
Check out the SUPER cute moment that caught Diana (and the whole audience) off-guard (above)!!!
How was the proposal kept so unwraps?! Ace explained:
"I called [producer] Nigel [Lythgoe] directly last week and said, 'I want to do this. I'm going to do this. Is there any way I could do it at the show?' He said 'Yes, I'm not going to tell anybody until the day of … [and] I want you to figure it out with Ryan [Seacrest]."