Itunes Authorization

Hello,
This is wierd, but going to try to explain it anyway. My boyfriend and I had our own Ipods and seperate external harddrives to manage our Itunes library. We broke up, he took my Ipod, but left the hard drives. Now I want to take both hardrives to combine in to my one new itunes library. However, I do not know his old Itunes password so I can't authorzie that music on my new computer. I paid for all of this music, so how can I get this music to authorize on my computer? I can't call him, we aren't really speaking.