I can't trust my friend again. The most important thing between person is trust. If we lose trust we lose everything. Before we used to a joint surety. I need a joint surety when I borrow money in the bank. If I can't pay money, a joint surety have to pay. So a lot of person had to pay instead of debtor. Most surety was their friends. Their relationship became mess. Now this system is changed. I think that you trust your friend but don't trust money.