Miley Cyrus and Liam Hemsworth
03/14/2013 at 03:00 PM EDT
Are they on? Are they off? What does their future hold?
and Liam Hemsworth
aren't saying much publicly about the state of their relationship, although rumors of a split have been circulating for weeks – fueled in particular by a photo of Cyrus, 20, without her engagement ring.
Now a source tells PEOPLE that based on her demeanor lately the pair appear to have "split for now."
In recent days Cyrus, who's been lying low, "seems exhausted," adds the source. But she's not given up on the idea of a reconciliation.
"She has no plans to see Liam but seems to be clinging to hope that they will get back together," says the source. "Miley hasn't canceled the wedding."
Hemsworth, 23, meanwhile, has been spotted with friends
this week in his native Australia.
However bleak things might seem, the couple do, of course, have options.