That depends... The biggest factor in this is your viral load. If you have a high viral load, condoms can be quite effective at preventing this, however they do take some of the sensation away. If you're undetectable on the other hand, it's now been proven that you cannot infect a sexual partner. That's the beauty of the advances in the medical science of this illness. It's still possible to have a raw is law lifestyle without having to worry about passing it onto someone else.

Yes it is possible. I know many of people who are HIV positive and their parents are HIV negative that are married with children

The most important thing is to be open and honest about your diagnosis. There are many healthy relationships where one partner is positive and the other is not. Taking care of each other is proper and remember, your diagnosis does not mean that you should not have love in your life.