im seeing a girl who has herpes and i do not have this, if the time comes we have sex what precautions should be taken so i do not become infected?

Hi,
I am glad that you have come to the message board. Although there is no way to have sex without a risk , you can minimize the risk of transmission by not having sex when she has an outbreak or thinks she is getting one. Also you could use a condom. Please see transmission rates below..female to male is a lower then what it is the other way around.

Here are the Female to Male transmission rates

If you have 100 couples where the female has HSV 2 but not the male (these figures are over a year) the odds of female to male transmission are if you do nothing other than avoid sex during an outbreak 4 men out of a 100 will get herpes in a year or 4% If you do go on a suppressive therapy then it drops to 2 men out of a 100 in a year or 2% and if you use suppressive and a condom the chances are 1 man out of a 100 will get herpes in one year or 1%.

The valtrex and transmission study stats are based on having sex 2 times/week.