You're seeing both Abby and Nora, but Abby and Nora aren't exactly too friendly to each other, they respect each other sure, but not friends. Nora knows you're seeing Abby, but Abby doesn't know you're seeing Nora. you try hard not to get caught. Nora says she'd never tell a soul, but you doubt that as she tends to talk a little too much sometimes. You have to dodge getting caught, playing things off, trying to make sure you and Nora stays a secret from everyone else. Nora is calm and collected about it always. She doesn't get anxious. Abby doesn't press too much about it, even if she has suspicions.