In 2006, rumors spread that the couple was engaged. Kunis flatly denied that to Parade Magazine in 2007, but she did open up about how healthy and loving their relationship was at the time.

Macaulay Culkin
"The split was amicable, and they remain close friends," a Kunis rep told the New York Post. The paper also reported that the pair ended things a while back, but kept it quiet while Kunis promoted her Golden Globe-nominated film.
Like his beloved character in Home Alone, we'd have to imagine Macaulay Culkin woke up this morning, looked in the mirror, clasped his cheeks and screamed.
"There are a lot of things people want him to be that he's not," Kunis continued. "He's an amazing, simple guy, who is probably the most brilliant person I've ever met. He's so, so smart and so aware and so kind and so sweet. Unfortunately, that's not what people want him to be, so they write stuff."
Mila Kunis and Macaulay Culkin: It's Over! – The Hollywood Gossip
Mila Kunis is back on the market. The beautiful actress has broken up with Home Alone star Macaulay Culkin.
Breakfast Links: Mila Kunis and Macaulay Culkin Call it Quits …
Mila Kunis and Macaulay Culkin call it quits (Huffington Post) •Little Fockers wins the box office weekend (Entertainment Weekly) •Jennifer Garner and 201101.
Macaulay Culkin & Mila Kunis Split! | Allie is Wired
Mila Kunis and "Home Alone" star Macaulay Culkin have decided to go their separate ways! The former couple have dated for eight years and called it quits months ago. They decided to keep the news quiet so that she could promote "Black …