According to a herpes website I visited:
an estimated 20-25% of pregnant women have genital herpes, while less than 0.1% of babies contract an infection.
If the mother is not experiencing an outbreak, doctors may even suggest/ allow that she give birth vaginally. If she is experiencing an outbreak, a cesarean section is necessary to prevent the baby from being infected with active virus.
Another thing the site explained-
Fortunately, babies of mothers with long-standing herpes infections have a natural protection against the virus. Herpes antibodies in the mother's blood cross the placenta to the fetus. These antibodies help protect the baby from acquiring infection during birth, even if there is some virus in the birth canal. That's the major reason that mothers with recurrent genital herpes rarely transmit herpes to their babies during delivery. Even women who acquire genital herpes during the first two trimesters of pregnancy are usually able to supply sufficient antibody to help protect the fetus.

if you get a lot of outbreaks it's best to have a c-section. i know someone who has it and delivered vaginally.

Not necessarily true, you do not have to have a csection. Most docs will put you on suppressive therapy a few weeks or months before your due date. Just to be careful. They do this so the baby wont be getting medication during the whole pregnancy.

It also depends on how the herpes affects you. How often you normally get outbreaks and if and how long you are on medication. I I normally get 1-4 a year. I have had it for 7 yrs now. In my 20th week I got 4 sores back to back. It was a month of hell. Of course I freaked out. So I went on Acyclovir from week 20 until I gave birth and I never had an outbreak. My midwife made sure to always ask me if I thought I was having an outbreak and they asked me at delivery. But I never had one and gave birth vaginally to a healthy baby boy.

My boyfriend has genital herpes and we are very serious and I love him a lot. I really want kids, but he is afraid that he will pass it on to our kids. Is it possible for him to pass it on to our kids, when i do not have it?

No, it is not possible to pass on herpes to a child in the womb.