Absolutely! When I was first diagnosed, I was married with a small daughter. My ex-husband understood and completely supported me through the worst of it whilst I was being prodded and poked by what seemed to be at the time, and endless line of doctors! My little girl (not so little now, she's 21!) has done her own research into this but has also witnessed pretty much every stage. Even to the point of holding the plastic bag to my face while I've been driving, with stuck food being vomited back up.
Now I'm in a very healthy, loving and supportive relationship and although he struggles to see me in pain at times, still sleeps next to me with my gurgling and coughing! So I'd say I'm pretty much doing OK :-)
I was and still am really open about suffering from this disease so he knew from the off. My advice would be the same for anyone embarking on a new relationship - be upfront. If they don't want to at least try to understand, or look at you like a leper, the show them the door. This disease is difficult enough to deal without having to deal with someone else's hang ups.