To the guys: it is hard to live with such a problem. It always depends on [relatively] serious medical issues which makes one sad and depressed. Hirsutismus means higher levels of androgens which in a woman can even cause infertility. Even if you find it gross/not attractive abstain from commenting or letting the girl feel inadequate. She is probably doing her best to keep herself together. Be kind and polite at all times.
I have this issue too and I've never had a problem getting a date. Did you know there are medications you can try though? Not saying you HAVE to or that you even SHOULD. But just a hey there are options sort of thing.