Welcome to the club. First: be honest and open and tell them right from the start. If you can’t trust them to tell them in the beginning, why would you want to be with them later?
Second: you have to realize that people with a broken leg need a crutch to walk, just as we need protection to be out and about. So be comfortable, confident, and trust yourself.
Third: if they are truest interested and not won’t judge you for things you can’t help, then give the same back to them.