Miley Cyrus and Liam Hemsworth aren't worried about the formality of marriage.

Liam Hemsworth and Miley Cyrus

Liam Hemsworth and Miley Cyrus

The couple are in no rush to tie the knot and only decided to get engaged in the first place as a "symbol of commitment" to each other.

A source told TMZ that Miley doesn't believe marriage makes a relationship better and as a result, the pair may never actually tie the knot.

The insider added: "They're both super chill and grounded. They're perfect for each other."

Meanwhile, it was previously revealed that Miley is "happier than she has been in years".

A source said: "She and Liam think the rumors of their breakup are funny. Everything is fine between Miley and Liam. She does want people to know that any speculation that a breakup is about to happen, is wrong! Miley is happier than she has been in years. She's had her ups and downs and finally feels as if she's found herself and her purpose. She looks and feels healthier today. At this point, Liam is exactly who she wants in her life and they find every way possible to spend as much time together as they can. Even with their non-stop schedules."

Miley and Liam are "in a great place" and are trying to focus on their relationship in private.

An insider shared: "They are truly in a great place right now. [They are] very much still together and have just been trying to be more private about their relationship. They have been spending a lot of their time being low-key in Nashville lately, and come home to Malibu often to spend time with family.

"Wedding planning has been a continuous conversation over the years but they have not locked in any set plans. Their family would love for them to finally tie the knot, and are very excited about it, but no one is pushing them. Miley is very simplistic when it comes to her ideas and does not want things to be an ordeal. Both Miley and Liam want to have children and they both want to be married but aren't trying to rush the process."