I live with a friend
estoy = I am hablando = talking con = with un = a amigo = friend via facebook is the same in English So it means "I am talking with a friend via (over, through, by means of) facebook"
"Tienes tu amigo" in Spanish translates to "you have your friend" in English.
"A friend"
God is a friend.
"Hay un amigo en mi" translates to "There is a friend in me" in English.
With your friend (male) or your friend (female)
It means "Stay calm, you always have a friend here." It is a comforting phrase to reassure someone that they are not alone and that they can rely on the support of a friend.
something like my friend fun
It means, "...if you/he/she had a [male] friend..."
It says, "You are a bad friend."
means "a friend of Carlos"