@LadyMarissa made a good point. ^^
A couple of tips if you go:
*Meet in a public place; don’t let them pick you up.
*Have a friend call you after an hour, then after another hour and so on just to make sure you’re ok.
*This may seem weird, but when you first meet ask nicely to see their driver’s license to make sure the name given is the one on the D.L.
*If you see them with their car, try to jot down the license plate number and give it to the person who calls you – privately, like in the restroom. The police will have something to go on if you go missing.
*When you leave, don’t go straight home, go to a friend’s house or a restaurant – this is to make sure they aren’t following you home.
I know all of this may seem silly, unnecessary and probably scary, especially since a friend is setting it up, but there’s no such thing as too careful.