Miley Cyrus star as “Hannah Montana” at the age of 13,  she did risqué photo scandal at 15, made headlines when she was caught on camera smoking out of bong at 18, and now, she’s engaged at 19 years old. If she’s engaged, how long will it last?

She’s engaged to an Australian actor Liam Hemsworth from “The Hunger Games” he played the best friend of Katniss. But will his relationship of Miley Cyrus last? They are both young and they both have separate careers. With the scheduling of both of them, she’s a singer, and he’s an actor. Will they have time for a marriage down the road? Sometime when young celebrities get married, their marriage won’t last within a year. But if they can work it out, it would be good. How many Hollywood marriage lasted?

“I’m so happy to be engaged and look forward to a life of happiness with Liam,” Cyrus so excited.

They met on the set of “The Last Song” in 2009. A Nicholas Sparks movie. Later, they were rumors that they were engaged since that time, but it was a topaz. People please get your facts right.

The ring on her finger following Hemsworth’s May 31 proposal is a similar cut, but it’s most definitely a diamond. “He wanted something beautiful and unusual,” jeweler Neil Lanetells People of the 3.5-carat cushion-cut gem, which is set in a gold band with smaller diamonds around the outside.

During their three years together, Cyrus and Hemsworth have gone through several breakups — the longest was from November 2010 to April 2011. At the time of their split “Liam wanted more, but she’s 17 and has other priorities right now… She is not ready to settle down, and Liam’s not a happy camper.”

Despite their ups and downs, Cyrus has said of her love: “I’ve never gotten along with someone so well.” She also said he fits in well with her family: “My parents are a little loco, so if you love me and my family, which has five kids, my mom, my dad, my grandma and about 10,000 dogs, after you meet my lifestyle, then you’re good. You’re a keeper.”

Although Cyrus is still in her teens, 19, her parents, Billy Ray and Tish, are “thrilled” she’s engaged “[They] have always thought of Liam as part of the family.” His family, including Thor star Chris Hemsworth, are “equally overjoyed.”

The couple, who live together with their menagerie of pets inLos Angeles’San Fernando Valley, aren’t in a rush to the altar. “It’s all very new for them ” They’re just so in love and so happy that they can take things to the next level.”

I hope I am invited.

Updated June 7, 2012