Miley Cyrus and Liam Hemsworth are back together again, and they seem so happy. While some of the "Wrecking Ball" singer's close friends were worried that she was changing herself for Liam, a source close to Miley that her lack of partying is actually making the singer "very happy."

"Miley is a changed person, and she actually seems to enjoy it," a source told People.

"Miley is doing yoga and seems very healthy. She rarely parties and is taking better care of herself."

The Voice judge really does seem like she's enjoying her new pace of life, and seems really happy. It's nice to hear that she's doing well!

Click through the gallery to see reasons why Miley and Liam are soulmates.