Cameron Diaz's life is falling apart. While the actress is still single and struggling with her career, her former lovers and friends are all finding lasting love.

Cameron's biggest heartache came when her ex Justin Timberlake popped the question to longtime love Jessica Biel. "Cameron stuck with Justin for more than three years hoping he'd propose," a source tells Star. "Cameron thought Justin was a commitment-phobe, but now he's shown he's not afraid of marriage."

Alex Rodriguez, whom Cameron, 39, dated for more than a year, also has a new lady in his life. "Alex is seeing sexy former wrestler Torrie Wilson," the source shares. "Even though he and Cameron just split four months ago, he's obviously not looking back."

And it's not just her exes who are moving on. Both of Cameron's two closest gal pals, Drew Barrymore and Kate Hudson, have gotten engaged recently. "Drew gushes about how wonderful Will Kopelman is," says the source. And "Kate is extremely happy with her fiancé," Muse frontman Matt Bellamy.