Betty White, the iconic actress, pokes fun at Ryan Reynolds' ongoing crush on her. The pair starred together in the 2009 comedy "The Proposal," and Reynolds has jokingly referred to White as his "ex-girlfriend." In an interview celebrating White's 100th birthday, she jokes that Reynolds can't get over his thing for her but adds that Robert Redford is "The One." Reynolds and Sandra Bullock also express their admiration for White.

Reynolds has been a fan of White's for as long as he can remember and jokes about her being a typical Capricorn who sleeps all day and parties all night.

Bullock praises White's comedic timing, saying she pivots like no other and makes it look seamless. She describes White as a loving, decent, optimistic, inclusive, and hilarious human being.

Bullock hopes White spends her milestone birthday with humor, kindness, and a vodka on ice. White's crush on Redford is still going strong, and she was given a life-size cutout of him for her 99th birthday. White's assistant reveals that she would greet the cutout in the office entryway, calling it sweetheart. For more on Betty White's life at 100, read this week's issue of PEOPLE, available on newsstands Friday.