I loaned about 40K to a very close friend in 2021. There was no note or any documentation documented that is a loan. My friend probably would pay me back this year. There won't be any interest. Would I be safe to call it as a gift and file a 709 because I can't prove to IRS it is a loan since there is no documentation about the term, interest rate, collateral, etc.? I am fine to file a gift return since it is information return only.