Unfortunately, it seems like this is one of those cases where you need to decide if you believe that he's telling the truth.
I would try asking him one last time and telling him that you're not going to ask again, but you expect that he's honest. That way, you're giving him an out.
<anon>
I would try asking him one last time and telling him that you're not going to ask again, but you expect that he's honest. That way, you're giving him an out.