Hiding music

today a colleague in the office was playing good music for a change. so i went up to him and asked what music he was listening to and i told him that it was good music. 
 I asked him if he could it to me later. he happiness wiped off his face as if i asked him for his girlfriend. not that he had the records or he brought it from itunes. it would save my time of finding it and downloading it. 
that was the weirdest reaction i have ever seen for something so trivial.