The Great Gatsby (5) - Foreshadowing

"They shook hands briefly and a strained, unfamiliar look of embarrassment came over Gatsby's face." (pg. 78)

This quote is from chapter 4 when Nick is eating lunch with Gatsby in the city and they run into Tom.  Tom mentions to Nick that Daisy is upset that he has not come over lately, then Nick introduces Mr. Gatsby to Tom.  Gatsby seemed a little uneasy when he met Tom and he disappeared a few minutes later.  I think this is a little bit of foreshadowing because Gatsby reaction to Tom made it seem like he knew him for somewhere.  I am not sure if Gatsby recongnized Tom or not, but it seem like he did.  So I think they will meet again later in the book and it will not be very pleasant.  Then later in chapter 4, Gatsby revealed to Nick that he knew Dasiy and he wanted to meet with her.  I think this will cause problems between Gatsby and Tom because Tom will not want Daisy seeing another man.