Actors Anne Hathaway and Adam Shulman threw an engagement party for family and friends in New York.
Hathaway joked that her beau ruined her plans to stay single.
"I am very much in love with him, Adam totally ruined my plan. I was really actually looking forward to a little alone time, and then I fell in love like a fool," contactmusic.com quoted the 29-year-old actress as saying.
The couple celebrated their engagement Saturday with 125 guests at Housing Works Bookstore Cafe in Manhattan. Hathaway and Shulman started dating in 2008.
"We hit if off immediately but it took us a pretty long time to get together. He thought that I had a boyfriend and I thought that he had a girlfriend, so I thought that I'd better keep my distance," she added.