I'm a recovering addict, and I've seen a little bit of everything stolen, but it's not always for drugs....my ex would just take whatever he wanted at the time...a coat for someone he knew he needed one, food for him or someone else.
I would be pretty upset that he is lying, since there is no one else there to take this stuff. Lying about something simple usually means he's covering up something else...just my experience.
Hugs and prayers!
Amy