Sex will be a little different if you have surgery to remove your prostate gland. It means you won’t ejaculate, though you can still have an orgasm. Trouble getting erections or having orgasms is also a risk after an operation or if you have radiation therapy.
You can work with your doctor to cut those risks. Start by asking about "nerve-sparing" surgery and more precise radiation therapy. You can ask about the success he’s had in protecting other men from these side effects.