[Trump.Deplorable]

Martin’s girlfriend, a witness for the prosecutor, but turned out to be a better witness for the defense, stated that Martin made it home, and she coaxed him to turn around and look for that “creepy ass cracker” that was following him around the neighborhood.

Martin was looking for a fight, he just happened to bring his fists to a gun fight. That was his problem, not Zimmerman’s

[TexasGator]

“Martin’s girlfriend, a witness for the prosecutor”

Did they ever determine who was the gf and who was on the phone?

[RoosterRedux]

Actually, Martin's girlfriend, Rachel Jeantel, wasn't really his girlfriend. She was an imposter hired by Crump (or so a lawsuit filed by Zimmerman claims).

[kanawa]

The girl on the stand wasn’t his girl-friend.
The real girl-friend that was on the phone, Diamond Eugene, didn’t want to testify
so the prosecution substituted the false witness Jeantel.

It came to light fairly recently, perhaps you aren’t yet aware of it.