Miley Cyrus 'Has a Hard Time Letting Go' of Liam Hemsworth Because of Their History Together

Miley Cyrus isn’t planning to officially throw in the towel any time soon when it comes to her marriage to Liam Hemsworth.

“They have a long history together, and that’s a huge part of why she has a hard time letting him go,” a source close to the singer tells PEOPLE exclusively. “At the end of the day, she wants to be happy, and she genuinely wants Liam to be happy too.