While some songs on Paula already seem to suggest estranged wife Paula Patton as the subject from the title alone, the new song, "Lock the Door," doesn't necessarily scream "Paula!" on the surface. But lo and behold, it looks like she's back again.

In the new song, Thicke take on the point of view of the woman he's singing about, ostensibly Patton, explaining that the man who's done her wrong "can't hurt her now more" and that she's "locked the door because you broke the key" while a chorus of female back-up singers chime in, singing, "I kept trying to tell you you were pushing me too far."