Having someone with you to back you up and support you is a good idea. And I agree with what other people have said, make sure you aren't harboring any optomistic expectations.

Six years after being diagnosed my mother was still in quasi-denial. Finally my friend Mark got fed up and pointed out to her that she wasn't part of my daily life when my symptoms became more and more pronounced (I went away to college). He had been around me before and after I was diagnosed and explained it to her.

I'm really lucky he did that for me because she is finally coming around. Bring the boyfriend I think it will help both them and you.