In a recent interview, X Factor judge Demi Lovato admitted to having reservations about her pal Kim Kardashian dating Kanye West. She also reacted to Kanye's impressive proposal to the reality star."I've told Kanye before that if he doesn't treat her well, I'm going to come after him," Demi told E! News. Hopefully, she won't have to make good on her words.

Kanye proposed to Kim on Monday. It was her thirty-third birthday and she'd been getting a lot of birthday love. Kanye went all out for the special moment. He rented the entire Giants' Stadium in San Francisco for only them and their closest friends and family before he surprised her with the ring. He also arrange for an orchestra to perform when he gave her the 15-carat Lorraine Schwartz diamond engagement ring.

Demi apparently approved of the gesture saying, "I've known Kim for years and she's been such a good friend to me during some really hard times. She deserves that Giants stadium!"

On several occasions Demi has expressed her love and appreciation for Kim. Kim was apparently one of the first people to call her during her stint in rehab. Kim was extremely supportive when not a lot of other people in Demi's life were.