Nobody can tell you if you can or can't.
There are several things to consider. I know when you are young and you meet someone else that knows what you go thru you feel a connection. Or even when you are older. However, when you are young, those dang hormones make you make decisions that you haven't thought thru. That's the nature of adolescents and young adults....with or without cf. The fact that you had the courage to ask says you are mature enough to take some thought about it.
Here are some of the things you should consider:
1. What infections do each of you have, and are you willing to be friends with out swapping fluids, and that includes kissing until you know?
2. If you have the same infections, are either of your infections resistant to any antibiotics? Are either of you allergic to any antibiotics?
These are important points because if you have different infection strains and resistant and allergy patterns, you will just share those with each other if you spend very much time closer than 3 feet apart. This includes holding hands.
If all this is acceptable to each of you....
How will you feel 10 years from now if you did share possibly life threatening infections and then discovered you really don't like each other??? This is WAY more serious than an STD.
If you are soul mates and it works, who is going to be the supportive one when you are both sick and tired and just at the end of your rope at the same time? Will this lead to bad feelings between you? Resentment?
Another thing to consider, even if you can live as married, what if a child happens. Yes, *most* women have decreased fertility and *most* men are functionally sterile. What if you aren't *most*, and a child happens. How do you feel about the stress of your disease processes on that child? From experience, I know my disease affects my daughter's life. I haven't decided if it is positive, negative or a wash. However, my husband is fairly healthy, so she's always had him, too.
I don't know the answers. Each and every one of us is unique in what we feel, think and can cope with.
Odds are your doctors and cf team with discourage any relationship. They only have each of your best interests at heart. Many people as you've seen will tell flat out NO. If all of your support people: parents, friends, relatives, what-have-you object, will you lose their support?
There is a lot of talk about siblings with cf here. It is my assumption that siblings with cf probably have similar infections, resistances and so forth as they share the same environment. Some one please correct me if that assumption is wrong.
To sum up, can you date? Sure, nobody can stop you from dating anyone. Should you date? That is up to you. Please consider some of the things I brought up. If none of that scares either of you, then, I say go for it.
Good Luck, whatever you decision!
Karen