Is there something you’re not telling us, Katharine? 

American Idol’s Katharine McPhee, 23, raised eyebrows July 6 when she made a huge deal about removing a band from her left ring finger before exiting L.A. International Airport with her boyfriend, Nick Cokas, 42. 

“She seemed very nervous about getting the ring off,” an eyewitness tells Star.  So nervous, in fact, that she kept that hand in her pocket and struggled to carry her luggage with the other.