Speaking with The Breakfast Club morning show on Tuesday, the 22-year-old comic said Cudi's early work kept him from committing suicide when he was a teenager.
The conversation turned to the 32-year-old rapper -- who made headlines earlier this month after revealing that he'd checked himself into rehab for "depression and suicidal urges" -- during a segment where Davidson was aksed to pick his favorite among a series of musical artists and entertainers. When he was asked to choose between Cudi and Drake, there was no question.
"Cudi's the best of all," Davidson said. "He saved my life. I would’ve killed myself if I didn’t have Kid Cudi."
According to Davidson, it was Cudi's 2009 debut studio album that had the biggest impact on helping him through some of the darker periods of his life.
"I would’ve killed myself. Absolutely 100%. I truly believe if Man on the Moon didn’t come out, I wouldn’t be here," he said.
Davidson also addressed Cudi's recent revelation about his own battle with depression, sharing, "It's kind of comforting to know your hero goes through the same stuff you do."
"I think that's why a lot of kids my age can relate to Cudi and people love him so much is because he's a very emotional dude," he added.
Davidson also opened up about working with Cudi recently on promos for the SNL star's upcoming stand-up special, SMG, and revealed that he's kept in contact with the artist since he checked into rehab.
"I texted with him last Monday, and he's in really good spirits," Davidson shared. "I think I might go see him next week. But he's in a good place."
Watch the video below for more on the "Day 'n' Nite" rapper's decision to check himself into rehab, and his moving message to his fans.