Answer:
social surrounding
Explanation:
According to my research on studies conducted by various psychologists, I can say that based on the information provided within the question it seems that Shawn's first experience was influenced by his Social surroundings. This is because the restaurant is the same as the first time he visited the only difference is that he went the first time with the girl he would end up dating steadily which is the entire reason he remembered it so fondly. Therefore his social surrounding was the factor that affected his experience.
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