I personally think it takes time to trust someone, and when you feel like you trust them....give them more time to let you down.
Before any corporate sale, purchase, partnership, or merger, you really need to know the company with whom you're doing business.
Any good merger, etc starts with a good friendship, or at least a good base of knowledge of what you're getting into, and who you're getting into it with.
Let me ask you this...
Would you give a copy of your house key, or car key to a stranger?