This is why I don't like business with friends. If I loan money or my time ( as I work on Computers and networks ) , I only do so as a favor with the idea that I will never see that money or was willing to give that time.
The last time I did business with a "friend" ( who actually was a childhood best friend )it was over cocaine in which I got screwed and he got my money.
I've only seen him one time since then, about 8 years ago and I was lucky to be able to keep my anger in check ( I was mostly hurt ). I haven't talked to him since, but I consider it a blessing as it was around the time I stopped doing coke anyway.
Last I've heard of him , he's had quite a rough time of life as he's still in the drug business and in and out of jail and jobs.