Most Helpful Guy
Why did you find the need to stab him and make him bleed? OK he was a jerk with you for 3 days but there are several ways you can resolve a problem and violence is the worst one. Learn to control your self and use any legal action against anyone that attempt to damage your integrity. Only in a life or death situation you should use violence, and not to the extreme to kill.
Been someone that doesn´t take any shit from anyone can lead you to something that eventually will make police have a good reason to arrest you and jail you among others with a similar way of thinking.