The couple, which became engaged in 2013, is preparing to tie the knot this autumn (15) and The Hangover Part II actress Chung celebrated the upcoming nuptials with an all-girls enchanted garden-themed bash at Jon & Vinny's Italian restaurant in Los Angeles this weekend.

However, Greenberg decided to surprise his bride-to-be by surprising her towards the end of the party, when he handed Chung an arrangement of red roses. The sweet gesture was a reference to U.S. dating programme The Bachelor.

The How to Make It in America star then gushed about Chung in a touching speech, revealing how she has made him a better man, according to