how dangerous is it to make love to a woman with herpes type b i love her is there any hope for me?

What do you mean type b? Is it HSV2? It's not dangerous since it is not life threatening. Please see transmission rates below if indeed it is type 2:)

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.