[TommiTheTaco]

Send logs don't tell someone if it's a loan, a gift, or a prize. Mails and messages saying that it is loan will dismiss doubt and raise your chances of getting said items back.

According to your situation, though, the dude did have a multi that wasn't you? Or you guys were proven to be multis, or at least logging in from the same computer, and this was way in the past or something? Might have an issue if these items/that money was used to help cheat through a game.