Children are an entirely different thing than spouses, though. They can't consent to existence before they actually exist, so you have a lot more thorny ethical issues involved in bringing them into the world, than you do when a grown adult, someone who can make their own decisions, wants to be with you enough to accept that risk. On the upside, for this particular illlness, if you get genetic screening and your partner isn't a carrier, they should be healthy. Personally, taking into consideration how pregnancy burdens your body, I would <i>never</i> recommend any lady with CF have kids, regardless.
<i>Carpe diem</i> if you find love. You won't regret it.