gurlfriends
A term of endearment given to close female friends (usually by other females)
Those are my gurlfriends, they are the best gurls you will ever meet in your entire life.
gURLfriend
A (presumably) female met over the internet through chat rooms or social networking sites usually by socially awkward, semi-retarded, or high functioning autistics that they claim as their "girlfriend", often accompanied by blurry inkjet printed cell cam photos. Usually gURLfriends live at least 2500 miles from their subjects. Phone conversations are rare to non-existent, with physical meetings never taking place. Some gURLfriends are in fact 40-50 year old men posing as teen or twenty-something girls for entertainment, making their subjects do humiliating things for their amusement.
I had to break up with my gURLfriend because i found out she was really an 55 year old Asian man who enjoyed criticizing my fashion sense for his own amusement, so i shall have to find another gURLfriend who lives in a different country.