When the song ' Get Munk'd' is playing, Alvin takes Brittany's hand and dances with her.In Alvin and the Chipmunks Meet the Wolfman, Alvin teased Brittany several times, hinting he likes her.At the end of the song, Brittany says thank you and that it was beautiful and forgives him.

He also says four or five times that he wants to hold her close. In this song there are many times where Alvin calls her 'babe' or 'baby', and there is a part where Alvin wrote that he wants to kiss her beside the Christmas tree. Alvin says to James Ingram to sing a song he wrote for Brittany - ' I Don't Want to Be Alone for Christmas (Unless I'm Alone with You)'.When they try to find the others, they hold hands. In Island Fever, when Brittany was feeling depressed, Alvin comforted her.In the intro dialogue of the song ' Stand by Your Man,' Alvin refers to Brittany as ' lovepuddle.'.Alvin's kiss awakens her and he teases her shortly after she wakes up. In The Legend of Sleeping Brittany, Brittany falls into a deep sleep after pricking her finger on a spinning wheel.In The Brunch Club, Alvin grabs Brittany by the waist and they swing off on the flag rope and briefly hold hands.Even in the alternate future where they are poor, they are still married. After they sing ' Everybody Have Fun Tonight' and are shown back to the present, they are dancing together. After the time machine breaks the first time and Brittany sees that they are married and rich, she tells Alvin ' What could be better than what we just saw?', meaning she wants to marry him and spend the rest of her life with him. In Big Dreams, one potential future sequence shows that Brittany and Alvin are married with kids.When Alvin comes into the door, before the song starts he says to the boy with Brittany's hula-hoop, ' Go ahead, make my day! Try to touch my woman!' this is obviously a threat that if he hurts Brittany, he'll do unimaginable things to him, showing he shows deep concern for Brittany. In Hooping It Up, Alvin has come to Brittany's rescue, during which time the song ' My Boyfriend's Back' is being sung.In Cinderella? Cinderella!, when Cinderella (Brittany) walks in, Alvin says ' the girl of my dreams.'.In Mind Over Matterhorn, Alvin sees that Brittany is depressed because The Chipettes are not as famous as The Chipmunks and he vows to make her the 'Queen of Rock 'n Roll' as Alvin is the 'King.' When Alvin thinks Brittany is going to kill herself, he jumps into the pool to rescue her and later Alvin gets Brittany's bags for her and helps carry her suitcases.

In A Little Worm in the Big Apple, when Brittany was conned by 'Uncle' Harry, Alvin helped her get back at him.Later on at the dance Alvin tells Brittany, ' You know Brittany, all I ever wanted was for you to be my Queen Valentine.' This shows that Alvin really had his heart set on going with her and that he has feelings for her. When Brittany turns down Alvin's invitations to go to the dance, Alvin is hurt and goes into a state of shock. In I Love The Chipmunks Valentine, Alvin tries several times to ask out Brittany.In the Hardee's Glass Commercial, Alvin and Brittany dance together.In the When You Wish Upon a Chipmunk album, Alvin sings ' I've Got No Strings' about Brittany dumping him, which implies that they were in a relationship, although this could just be dialogue for the song's intro.They also dance together in ' The Girls of Rock 'n' Roll.' In The Chipmunk Adventure, they get so close to each other that their noses are touching four different times.They hug at the end when they're singing ' Celebration.'

He looks at her in somewhat of a longing way.

In May the Best Chipmunk Win, Alvin holds Brittany's hand and guides her to a desk when she and The Chipettes first come into the classroom.

In My Pharaoh Lady, Alvin kisses Brittany's hand.

In The Chipmunks Go to Washington, he and Brittany sing ' Up Where We Belong' together.

He starts naming a few people he knows, but the fourth one he says is ' BRITTANY' and he pauses and smiles before continuing on. Carroll, Alvin is naming off people he wants to tell about his wish list.

In Experiment in Error, Alvin is very concerned for Brittany for most of the episode.

Later, they sing together while holding hands on stage.

In Snow Wrong, Alvin kisses Brittany's hand.

When she faints and falls backwards, he quickly catches her.

In The Chipettes, when Brittany walks into the closet accidentally (out of being nervous) and screams, Alvin, with a worried expression, lets her out.

Brittany and Alvin sometimes squabble with one another, but they also sometimes act friendly towards one another and show signs that they are willing to help the other out. Alvin and Brittany are the love/hate relationship couple that often runs as a gag throughout the cartoon series.

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