Bipolar Disorder Support Group
Bipolar disorder is not just a single disorder, but a category of mood disorders marked by periods of abnormally high energy and euphoria, often accompanied by bouts of clinical depression. This is the place to talk about your experience with bipolar disorder, learn from others' experiences, and find support.
But I think once you get to know this person better your excitement nervousness and anxieties will go away. Also some people become addicted to these feels when dating some one new. They misinterpret them as being love and jump in and out of relationships very quickly (and that is not normal). But that doesn't seem to be the case with you since you had to ask about it :).