Yes, not a good idea. When doing my first 90 day report with my gf waiting she picked up a wallet and handed it in. The owner was contacted and when he checked his wallet said there was money missing. My gf was held by the police until I'd finished my report then they escorted me to where she was held. When I arrived it seemed that having a farang bf was proof enough that she hadn't emptied the wallet and they let her go.