Staking a buddy (take 2)

[Marlow]

Here's the short version: I staked a friend 2k. I got 25% plus all his rakeback (if he loses, it's on me). Two weeks in he was up and cashed out 1,100 (for bills). I took 25% of that as well. Then he lost the rest. Interestingly, between the rakeback and the money from the cashout, I've gotten a return of exactly 2k. Now what the hell do I do?

Do we just start over? Would you alter the deal? How do you feel about him cashing out only part of his winnings like that?

Thanks for your help.