<P> When Sheldon's grandmother visits in season nine, she confronts Amy for hurting Sheldon and unintentionally reveals the secret engagement ring in his possession . Although Amy was initially shocked, she became really happy to know that Sheldon loves her enough to have considered taking that step forward in their relationship . Amy later prepares a surprise birthday party for Sheldon, which he has not previously celebrated with the group . </P> <P> After a plumbing accident makes her apartment uninhabitable in season 10, Sheldon and Amy embark on a five - week experiment living together to test their compatibility . Amy later admits she lied about how long the repairs were taking so that she could continue living with Sheldon . They eventually move into Penny's old apartment together, while Penny moves in with Leonard . Later, they decide to make the arrangement permanent . Amy is later offered a three - month course at a science camp in New Jersey and leaves with Sheldon's encouragement . She becomes angry when she learns of Sheldon spending time with Ramona Nowitzki, whom she suspects has romantic feelings for Sheldon (which she does). In the season finale, after Ramona kisses Sheldon, he visits Amy and proposes to her . The episode ends on a cliffhanger awaiting her answer . In the Season 11 premiere episode "The Proposal Proposal", which picks - up immediately after Sheldon's proposal, Amy's answer is further delayed by a phone call from Leonard and Penny, after which she finally says yes . </P> <P> Stuart David Bloom (Kevin Sussman) runs the Comic Center of Pasadena, the comic - book store that the guys visit . Stuart is characterized by his low self - esteem and loneliness, which often result in pathetic attempts to engage with women and win favor with the main cast . This is despite owning his own (albeit troubled) business, and being a talented portraiture artist who attended the Rhode Island School of Design . </P> <P> During Stuart's first appearances in season 2, he showed enough social skills to ask Penny on a date on two occasions . Neither ended successfully, however, as an argument with Sheldon over a comic book prevented Stuart from following - up his well - received date with Penny by accepting her invitation to come to her apartment for coffee (which was later confirmed to be a cryptic offer for him and Penny to have sex). The second date unraveled when he was necking with Penny and she called him Leonard, ending the date and any future prospects for him . In season five, he also briefly went on a date with Amy, although Sheldon interrupted the date to solidify his relationship with her . Stuart's confidence and charm from that early appearance have been almost completely erased from the character since then, so that he is now a neurotic mess who fails at everything he tries and only sometimes seems aware that no one really wants him around . </P>

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