Miley Cyrus and Liam Hemsworth started their 2013 with a vacation as they jetted to Costa Rica last week in time to celebrate his 23rd birthday on Jan. 13. How sweet!

The engaged couple was joined by Liam's older brother Luke, his wife Samantha and their three kids as they hiked, frolicked and soaked up the sun in the tropical locale.

Looks like this trip is just what they needed!

Liam Hemsworth was looking pretty casual as he braved a rainy Los Angeles afternoon to hit the studio on Wednesday.

The 22-year-old actor was probably tying up some loose ends since he'll soon be heading to Atlanta to begin shooting The Hunger Games: Catching Fire. We're sure he and fiance Miley Cyrus will get in some alone time before he goes!

You know temperatures are dropping in L.A when this hunky Aussie puts away his sleeveless tops!

Liam Hemsworth stopped traffic while walking along Sunset Blvd. in Hollywood yesterday, and we must say, The Hunger Games actor has never looked so hot! Donning jeans and a blue sweater, Miley Cyrus' fiance made his way to a business meeting.

Following rumors that surfaced last week claiming the action star was spotted getting "cozy" with a mystery blonde at the Samsung Galaxy Note II party, we haven't seen Mr. Hemsworth and his lady love together at all. Hmm...

Britney Spears and Jason Trawick might not be the only ones with trouble in paradise!

If there's trouble in their relationship, though, the Hannah Montana actress is one really good faker!

"I love my fiance & he loves me. All the rest is bull shit. We get to live a life of happiness no one can take that away from us! so now because I am engaged I can't have a friend of the opposite sex? can't have a friend help me out while I'm working allll day? #dumb. maybe YOU would have friends too if you'd get your face out the tabloids & start living your own life:) unfortunate," she wrote on her Twitter.

The best way to squash rumors is to be photographed together, so Liam might want to take his fiancee to a romantic meal at Chateau Marmont sometime soon!

Who let the dogs out?

Last night, Miley Cyrus and fiance Liam Hemsworth got a little closer as the couple decided to do a little dog walking after dark near their home in Toluca Lake.

The 19-year-old actress recently made a splash in the TV world as her guest appearance on Two And A Half Men garnered 13.6 million viewers. Great to see that she's still got it after her Hannah Montana days!

Instagram/Liam Hemsworth

Following in his fiance's footsteps, Liam Hemsworth posted a photo of his tattoo that matches Miley Cyrus' from July, an excerpt from Theordore Roosevelt's renown Citizenship in a Republic speech.

The Hannah Montana star's tattoo reads, "So that his place shall never be with those cold and timid souls who knew neither victory nor defeat." Liam's ink, in matching manuscript, says, "If he fails, at least he fails while daring greatly."

The famous pair's comparable body art comes a month after the former Disney star's series of tweets that were rumored to be signs of a impending split. Cyrus later dismissed the rumors, tweeting, “No, there is not trouble in paradise .... just thoughts.”

Miley Cyrus is one lucky lady!

Liam Hemsworth and a pal were snapped hitting the gym on Monday afternoon, and the 22-year-old showed off his buff biceps and sexy pecs in a tight white tank top.

Despite rumors that Miley and Liam's relationship is on the rocks, it sounds like everything is fine in the bedroom! Someone at the National Enquirer overheard Miley and a pal gabbing at lunch, and apparently she couldn't stop bragging about her sex life! "There's no holds barred," Miley allegedly gushed to her friend. "The sex is wild! Liam fulfills all my fantasies, and I fulfill his."

Miley reportedly admitted that the two "do it everywhere - it's become a game to see who can come up with the most bizarre place!" Hopefully they're not thinking of doing it anywhere where there might be cameras...

No one can deny that Miley Cyrus' fiance Liam Hemsworth is a total hottie, but what's with the Navajo-inspired tanktop? Yikes!

The Australian Hunger Games star cruised around Miley's Toluca Lake neighborhood on his skateboard. Too bad he left his little punk princess at home.

With those bulging biceps, Liam's definitely a sexy skater boy!

Hmm, who knew Liam Hemsworth was a secret smoker?

On Sunday we spotted the Aussie actor driving fiancee Miley Cyrus around Studio City, and we couldn't believe that he was puffing away inside of her Mercedes SUV! Maybe she smokes inside her pricey ride too so she doesn't mind the smell?

The lovebirds went on a Starbucks run, and we're not sure where they were headed but they had about 8 beverages with them -- maybe this was for the entire Cyrus family?