You guys said it amazingly well already, so all I can come in and say is that I agree, Nina is a Cancer. She really does put her heart and her soul into relationships. And unfortunately, none of them (before Andy) have worked out. She gets so hurt because she puts so much into these relationships, and she gets Carl who lied and cheated and was gay and was absentee and everything. And Jake who also lied and focused on himself too much later in the relationship. It's almost sad that she puts so much of herself into these relationships when she gets so hurt from them, but it's all going to pay off when she she puts so much into the relationship with Andy and it really works out.
