A Pennsylvania man has been arrested and charged with homicide after allegedly stabbing his girlfriend to death and injuring her brother in a dispute over a haircut. On Sunday, November 3rd, police responded to a stabbing incident at a home in East Hempfield Township. They found Benjamin Garcia Gual, 49, in his vehicle with a knife. His girlfriend, Carmen Martinez-Silva, was found dead in the yard. Martinez-Silva’s brother was also at the scene suffering from stab wounds to the head. He is expected to survive. READ: IRS: Florida Man Admits To $7 Million Biofuel Fraud Scheme According to report…