Penny joins Sheldon and Amy on their first date
Penny drops in on Amy and the guys
Amy kisses Penny while on a date with Sheldon as Bernadette looks on
Sheldon and Amy have their first kiss
Amy plays doctor, Star-Trek-style, for Sheldon
Sheldon assists Amy in her lab
Penny, Amy, and Bernadette go to Disneyland for the weekend
Amy is overjoyed that Sheldon got her a tiara
Amy, Bernadette, and Penny playing Twister
After a wrestling match, Penny and Amy kiss Sheldon all over his face
Furious with Bernadette for having her car towed, Amy swings her bag at her, accidentally hitting Penny in the face and breaking her nose
Sheldon spanks Amy for deceiving him by faking sickness, however, Amy appears to enjoy Sheldon touching her butt
The 3 female stars of The Big Bang Theory: Penny, Bernadette, and Amy.
After a ruined trip to Las Vegas, Penny, Amy, and Bernadette play Dungeons and Dragons with Leonard, Sheldon, and Howard
Having apologized to Howard and Bernadette, Sheldon playfully smacks Amy's butt while asking her to get them some beers
Having dinner with Leonard and Bernadette, Amy feels guilty about lying to Sheldon
Disgusted by Leonard stating that he and Penny are honest with each other, Amy snorts
Amy dresses like a Catholic schoolgirl to make up for lying to Sheldon
Amy and Sheldon listen in on Penny
During their 5-year anniversary, Amy begins to question if Sheldon even thinks about her
Amy is outraged and infuriated when she sees Sheldon taunting her on a Fun-With-Flags video and decides to let him have it
Amy confronts Sheldon for his offensive video, and she furiously demands that he get rid of the video
A disguised Bernadette records Amy as she and Dave are having dinner
After accidentally backing up into Dave's car, Penny, Bernadette, and Leonard are caught by Amy and Dave
Sheldon and Amy rekindle their love for each other
Amy is overwhelmed with excitement that Sheldon wants to have sex with her for her birthday
Amy is eager for the present Sheldon has in store for her
Sheldon and Amy have just had sex, and they both enjoyed it
Delighted about having sex once, Amy relishes the thought of having sex being an annual birthday treat for her
Amy doesn't get along too well with Sheldon's MeeMah
Now that they're a couple again, Sheldon and Amy are dual hosts for Sheldon's talk show "Fun With Flags"
Bernadette tells Penny and Amy about her pregnancy
Penny and Amy sing Justin Bieber's "Baby" to commemorate Bernadette's pregnancy
Amy plans a special birthday event for Sheldon to repay him for giving her a delightful birthday
Penny, Amy, and Bernadette humorously coerce Raj to turn down Emily's invitation
Sheldon reveals his secret store-house to Amy
Sheldon pays Stuart to go shopping with Amy in his place; displeased, Amy pays Stuart to give Sheldon a piece of her mind
With her apartment flooded, Amy decides to move in with Sheldon; Leonard and Penny suggest they try it as an experiment.
Sheldon and Amy resolve their issues and make living together more comfortable
Now that they're comfortable living together, Amy and Sheldon host a dinner party
Amy feels all fuzzy after Sheldon says she's cute
On the way to the hospital for Bernadette's baby, Sheldon touches Amy's nose, saying that instead of ruining her birthday, he'll just ruin 24 individual hours throughout the year.
Sheldon and Amy visit Sheldon's mother in Texas for Christmas
Amy comforts Sheldon with a kiss
Sheldon follows Amy to Princeton to propose to her: Will Sheldon and Amy get married?
Amy hugs Ramona in gratitude for her motivating Sheldon to propose
Amy (as well as Sheldon) gets a nasty case of food poisoning during a birthday dinner for her, and finds herself throwing up
Sheldon kisses Amy, although from this angle, it's unclear if he's kissing her on the nose, on the cheek, or on the lips
Stunned by her beautiful wedding dress, Sheldon kisses Amy on the cheek
At long last, Sheldon and Amy are finally a married couple.