Bennica (Benn/y and Er/ica) is the romantic pairing of Benny and Erica. It is the second most popular pairing of the series. Erica doesn't appear to have feelings for Benny due to him being unpopular, though she prefers him to his best friend, Ethan Morgan. Due to a love potion, she kisses him and despite the attention from other girls he stays with her. By season two, they are closer friends and Erica no longer treats Benny as she did in season one, as if he doesn't exist.
After Erica wants David to feed on Benny, Benny says he thought they were friends.
After Erica touches Ethan, thinking he's David, she rubs her hands on Benny to get rid of "Ethan germs." This shows she doesn't think Benny has germs and she prefers him to Ethan, at least.
Benny seems a little jealous that Erica likes David.
When Benny and Ethan are together and Erica and Sarah show up, Erica and Benny start talking in a friendly way.
After Sarah dumps the assistant principal in the trash, Erica says she'll handle it and flashes away to get Benny. This could possibly mean that she trusts that Benny knows how to handle the situation with his magic.
Once she gets Benny, she stays arm in arm with him.
Erica asks him to do the memory spell, meaning she knows he had perfected it. which means they talked and spent time together during the period of time sarah wasn't there.
When Benny leaves excited about going to see some "hotties" Erica looks jealous.
When they were making the poison, Erica said that their proportions were off and Rory asked how she knew that. Benny said that before she was a smoking hot vampire she was a mega nerd. This shows that even before she was a vampire Benny noticed Erica showing he had an interest in her and he called her smoking hot.
When Ethan asked who should be bait Erica pointed to Rory who moved her hand so she was pointing at Benny, but she quickly moved it back implying that she didn't want Benny to be the bait and get hurt.
When the boys got rid of the alligator, Erica smiled at Benny (and Ethan) when they high-fived each other.
When the boys were walking down the hallway, Erica is looking at Benny.
Even though Benny got scared when Erica hissed at him, he looked as if he knew she wouldn't hurt him.
In the beginning you see both Benny and Erica are interested in signing up for the play.
When they both go to sign up Benny and Erica touch hands.
Benny gives her a shy smile and says, "Age before beauty" and Erica lightly smiles.
Erica and Benny stared at each other when they both went to sign up for the Rainbow play.
When Erica (being possesed by Olivia) knocks down some of his equipment, Benny takes the blame for her even though he didn't know what was going on with her.
Benny called Erica "bitey".
Benny smiled at Erica when they were by the theater seats.
At one point in the end, when Ethan was painting the mirror black, they are seen standing next to each other.