This is the relationship between the witchBonnie Bennett and vampire-witch hybridNora Hildegard. They shared a moment together in order to come to understand each other, but Nora believed her to be a traitor after finding out that Stefan took Mary Louise. Eventually, Nora knew that Bonnie wasn't involved and the two became friends again. They agreed to work together in order to track down Rayna Cruz. Nora and Mary Louise were captured by the Armory however and Nora and Bonnie lost touch for about three years. Bonnie knows that Nora and Mary Louise killed themselves though and it can be assumed that Bonnie was saddened by Nora's death.
In Cold as Ice, Bonnie was originally bothered by Nora when she wanted to help Bonnie organize and run the charity, Toys for Tots. Nora began helping around, which Bonnie gradually started to appreciate, especially after witnessing Nora become friendly with a kid suffering from cancer. After the charity event, the two sit down for a small chat. They begin to talk about Mary Louise and Nora explained her love for her lover. Bonnie explained to Nora that she didn't need a lover to define her completely, which Nora appreciated hearing. Nora even calls her beautiful despite Bonnie's declaration that she doesn't need to be called beautiful in order to believe that she really is beautiful. They begin to smile at each other, gaining a mutual understanding for each other. However, this moment between them is short lived when Nora finds out via text from Julian that Stefan kidnapped Mary Louise. Nora retaliated by knocking Bonnie out while siphoning her magic. Even though Nora believed that Bonnie knew about the kidnapping, Bonnie had no idea what Nora was talking about when Nora angrily told her off before being knocked out.
In Things We Lost in the Fire, Nora shows up at Caroline's baby shower. She gives Bonnie, who invited her, some socks for Caroline's babies. Bonnie then invites her to have a drink. Matt confronts Bonnie when they're alone and asks why Nora is there. Bonnie tells him that she invited Nora and Matt lists the reasons why they shouldn't trust her. Bonnie tells him that she felt bad for her and that it's better to have a member of the Heretics as a friend rather than an enemy. Nora, who has apparently been listening to them, appears and says that maybe she should leave. Matt agrees but Bonnie says that Nora should stay. Nora says that if she doesn't, Matt might say something that would cause her to hurt him. Nora then uses her magic to constrict Matt's airway. Bonnie pleads with her to stop and Nora, moved by her kindness, relents, thanks Bonnie for inviting her and leaves. Later, Bonnie finds Nora sitting by herself and chastises her because Bonnie was offering her a fresh start. Nora then accuses Bonnie of sending her a postcard with an X painted on it. Bonnie, who convinces Nora that she didn't, asks why she's bothered by it and Nora tells her that it means that the Huntress, a ruthless vampire hunter, is coming for her. Bonnie tells Nora that she will do what she must to protect her friends. Nora then asks her what they should do.
In Postcards from the Edge, Nora and Bonnie work a tracking spell together and find that Rayna Cruz, the Huntress, is in Cincinnati, Ohio. Mary Louise invites herself along and the three of them go together. Both Bonnie and Nora enjoy this trip together, much to Mary Louise's annoyance. They find that the Huntress is a patient at Stillwater State Hospital. Bonnie asks what the plan is and Mary Louise states that they'll kill the Huntress while Bonnie just watches. Nora warns Mary Louise not to underestimate Rayna. In her room, they find an old senile woman who claims not to know what they're talking about. Bonnie is convinced that the woman is not the Huntress and tells Mary Louise that she won't allow her to be killed. Nora agrees with Bonnie, much to Mary Louise's jealousy. Bonnie convinces Nora go with Mary Louise to find the real Rayna Cruz because she knows that Nora is using Bonnie to make Mary Louise jealous. After the killing Rayna Cruz (by Enzo), the huntress who owns the Phoenix sword, Mary Louise confronts her about her growing friendship with Bonnie and asks if Nora has feelings for Bonnie. Nora then told her that she found a liking towards her.
In This Woman's Work, Nora calls Bonnie to ask her if she let Rayna get the Phoenix Sword. After Bonnie denies it and asks how she knows, Nora then tells her that Beau's scar that he got from Rayna has opened up which means that Rayna is coming for him and every other vampire in her path. Nora tells her that she is at the hospital with Caroline helping to deliver her babies. Nora says that Rayna can track any vampire marked by her sword which means that she will come to the hospital to slay Beau and any other vampire she can find.
Bonnie : "Close. Bourbon. I'm sorry I was harsh earlier. I heard you listened to Valerie and that you sided with Lily against Julian. I mean, you must be attempting to turn over a new leaf, and you clearly don't have anyone else..."
Nora : "Lovely. A pity friend. Just what I always wanted."
Nora : "That's fair. She does always think of me first. Maybe I'm spoiled, or old-fashioned, but it's nice having that one person who doesn't need anything from you. Who just loves you and thinks you're the most amazing, beautiful girl in the whole world, you know?.....Maybe... Maybe you don't."
Bonnie : "I don't need someone to tell me I'm pretty."
Nora : "Nobody needs it. That doesn't mean it doesn't feel good to hear it. Thank you for today. You're a very kind person, and... beautiful. Even if you do wear hideous tops."
Nora: "Yes. Custom-made for her. She used it to put Julian in the stone along with thousands of other vampires. She's ruthless. Once you've been marked by her sword, she never stops hunting you. That's how Beau got his scar. She'll come for him not, she'll come for all of us."