How do i deal with this?

My husband of 5 years is just now finding out that the daughter he signed his rights away to 7 years ago is after all his thanks to dna when the mother asked him to because she didn't want to give him paternity test back then when he requested it in court. He never "dated" her and really knows nothing about her at all. And he's very embarrased that he now knws he fathers a child with her. Now thanks to myspace she has found us and we did the whole dna and all but she is so pushy! I'm very layed back about it and try to make things cool but she calls non stop and seems to be very infatuated with the very thought of my husband. I try not to let it bother me but she finds little ways to let me know details about when they concieved and is sooo corney about the long lost daughter and daddy thing that it just makes me sick! it's just so weird that after not knowing the child at all then all at once it's thrown up in our face!