Two specific omissions of truth by Brett and Jake come to mind first for me, and I want to spend time unpacking both “lies” and their intentions and implications and comparing them against each other.
I’ll start with a lie that one could hardly call a lie; Jake keeping his injury hushed. This is not a direct lie, but it is the kind of omission of truth that changes some aspects of Jake and his comportment. We can see how this affects Jake as a person, how he acts and how he interacts. He feels like an outsider in a sexually driven culture, his injury affects how he interacts with Brett, and many other parts of him. I think it’s safe to assume that all the characters (like the real people we interact with every day) have similar things that they are all not always transparent about, though most likely with varying degrees in comparison to Jake, who has a large detail of his life that he keeps hidden.
We can now connect this to another omission of truth; when Brett does not tell Jake that she is going to San Sebastian with Cohn. It could be argued that Brett is not intentionally not being transparent with Jake about who is going with her to San Sebastian, but for the sake of conjecture, I will be assuming that she wasn’t mentioning Cohn to Jake on purpose.
I don’t think it’s fair to call either of these omissions of truth intentionally malicious, but there is certainly a different circumstance and motive surrounding both. Neither of them is directly asked questions where they did not tell the truth, so I don’t feel comfortable saying they are “lying” but they are certainly not being completely transparent.
Jake omits the truth to benefit himself. Not to say that Jake is being “selfish” but he deems it beneficial to himself to not tell people about his injury. With that statement about Jake, looking at Brett, her omission of truth is harder to tell who it “benefits”. On one hand, it could be argued that Brett is not telling the truth to benefit Jake because she doesn’t want to hurt Jake’s feelings. Another explanation is that Brett could be lying to protect herself, knowing that Jake would be upset with her. Personally, I think that the explanation is a mix of both.
As well, I think Brett’s lie is shallow in comparison to Jake’s in terms of pervasiveness into their lives. Jake’s life is shaped by his “secret” and Brett’s “secret” is shaped by how she lives her life.
This is all just a simple comparison, but I think it shows something into the way that they both live their lives and on the ideas of truth and honesty in The Sun Also Rises and in Brett and Jake.