Liam Hemsworth is fiercely private and Miley Cyrus is fiercely public. Liam told his fiance to shut down her Twitter page in the past, and she did, but Miles returned to Twitter ages ago and she's been making up for lost time.
After a fight with her favorite Aussie, Miles posted the following messages just to get Liam's attention: "Why do I torture myself and what ps I love you. ahhhhhh. I have got to pull it together”
“Ever feel like you want just … something more. Not sure what exactly … passion perhaps?”
Miles was trying to get Liam's attention "but she just ended up making him pull away from her more."
“He think she’s acting like an immature schoolgirl, and he wants her to get off Twitter completely.”
Based upon how private Liam is, I doubt "a source" knows that he thinks Miley is behaving immaturely. But all this rumor does is remind everyone of the obvious: These kids are too young to get married.