If you "invested," that means you are took a risk, just like investing in the stock market. But maybe you think you made a loan? And you would only get a W-2 if you were an employee.
That's a large sum to give someone without a meeting of the minds as to its purpose, and with no paperwork whatsoever. The IRS is going to question the true nature of this, and might even claim that you made a non-deductible gift. You may wish to see an attorney first.