The "Charlie's Angels" actress - who has been dating her "He's Just Not That Into You" co-star Justin Long since August 2007 - has been overheard discussing her plans to tie the knot for the third time.

A diner at Hollywood restaurant Hugo's told InTouch Weekly magazine: "The tables are close together, so it's kind of hard not to overhear things."

"Drew said she wanted to find a wedding planner and Justin said they should look at engagement rings that day."

"But Drew said, 'You know what I like, surprise me.' They seemed very happy."

Drew has been wed twice before. She was married to bar owner Jeremy Thomas for a month in 1994, and then to Canadian comedian Tom Green for less than a year in 2001.

Justin has never been married.

The couple reportedly looked at wedding venues during a holiday to Mexico in March and made inquiries about a possible summer ceremony.