go and kick his ass.
wait for him to come home one night, and go kick his ass.
make sure you are sly about it so you don't end up getting arrested.
don't kill him, just kick his ass.
and tell him while your kicking his ass, you have had alot of sex with his girlfriend.
****ing people in this world, so many of them just ****ing idiots.
everywhere- haha all over some paper monopoly money thats worth 3% of what it was worth 100 years ago.
just go kick his ass man, i've seen you posting around here of people taking advantage of you before. kick his ass or atleast try, you will feel better when your done.
and i suggest you ditch the investors/clients that backed out and **** them

they obviously where flaky ass people for that to shake them up.
only deal with the people willing to back you when the roads bumpy as well, those are the people that not only appreciate your work, but you as well.
my two cents.
let me know if you kick his ass tho. ha
...if he is legit about something- there are more professional ways to handle something that being a bitch and running to clients/investors and trying to bad mouth someone. i've found out the less you speak bad of people, the more people that speak to you.