The Episode 15 of "The Big Bang Theory" Season 7 is called "The Locomotive Manipulation." In this episode, Sheldon and Amy will go on a romantic date, with Howard and Bernadette joining them. According to CBS' Synopsis of this episode, "Love is in the air when Sheldon and Amy join Howard and Bernadette for a trip to wine country. Meanwhile, Leonard and Penny must rush Raj's dog to the vet."
The spoilers leaked online suggest that Sheldon and Amy will review their relationship agreement. Sheldon will come to know about Amy's plan for the Valentine Day. The plan features a weekend trip to Napa Valley. Bernadette and Howard will be joining the two.
According to the preview clip, on the big bang love train, Sheldon feels that it is the best Valentine Day ever, if he confirms there are no hobos onboard. In the train, Sheldon meets his soul-mate. The preview suggests that this man shares Sheldon's interest and enthusiasm for trains, and the two hit it off.
The spoilers reveal that Sheldon will be bringing his new friend for dinner, which will not impress Amy. She is likely to have a talk with Sheldon. Sheldon will be complaining that the trip was more about Amy and she was manipulative. Amy seeks a romantic relationship with Sheldon. Shamy fans can expect Sheldon to kiss Amy.
Leonard and Penny will be taking care of Raj's dog, as Raj is spending night at the telescope lab. The dog will eat-up Leonard's chocolates. This couple will be taking Raj's dog to a vet. Raj will arrive to blast-off Leonard and Penny for being careless. Yvette, the veterinarian, will check Raj's dog and also give Raj her phone number.
The spoilers reveal that Sheldon will tell Leonard that he was more interested in the four-finger train conductor and less in kissing Amy.
Kaley Cuoco's Name Change:
In the opening credits of Episode 14 of "The Big Bang Theory" Season 7, Kaley Cuoco's name was changed to Kaley Cuoco-Sweeting. After the episode was aired, Kaley took to Instagram and posted a screen-shot of the change, saying: "Seriously giddy :)."