My colleague is trying to set me up with another colleague tonight and I'm panicking  a bit as I've (M27) never had a girlfriend and have no idea how to *talk*  to women. To top it off this is the first time I'm seeing this girl I've only just seen a pic of her and she looks nice and is definitely out of my league.

I know this sounds pathetic but any tips on how to calm my nerves and what to do because I'm pretty nervous.

Thanks