It is not bad to trust your colleagues when going into business with them because trust is one fundamental thing you need when going into business without trust a business cannot be executed.When term's come to business, I can believe in colleague but I can not trust anyone. I once have experience of betraying by my colleague but i didn't feel bad much about it then, because I had bear it in mind before that he may fuck up at anytime. So, when it happened it didn't not strange to me.