"It's the smoking and lack of sleeping; it's hard to share your life with someone when you need to explain further why you do these things," she says.
Jill knows that she'll eventually have to confess her situation to a long-term partner.
Not every relationship hides a secret like this one, but plenty of people face similar decisions about how much they should tell a new companion.
Multiple Sclerosis Journal offers Online First, by which forthcoming articles are published online before they are scheduled to appear in print.
More details, including how to cite Online First articles, can be found on the Online First Fact Sheet.
"It's something that will affect me if and when I settle down and have children, since I would not be able to take these medicines [while pregnant]," she explains.
But what if this involves a health or medical secret you're hesitant to talk about?
Jill, a 33-year-old from New York City, knows that finding Mr.