Flip without getting a property under contract...

[Anya Swanson]

This is my first flip. The seller has accepted my email offer on her house. The cash buyer has accepted my price. Question: Do I still need to get the property under the contract or could I just connect the seller and the buyer and receive my small (5K) cut? I get that there is a chance of them circumventing me out of the deal plus taxes involved, but am I missing something else here?