u/Ill-Ant-8408

I just rewatched season 1 after the longest time (feels like 10 years) and I'm on episode 5, the Bloody Mary episode. At the end Dean asks Sam what his secret was but Sam refuses to tell, but then we see Jessica as a woman in white. According to ep 1 women in white had unfaithful partners, could this be Sam's secret? That he was unfaithful? Or was it because he was keeping secrets and then Jessica died never knowing them? There are many other ways to be unfaithful after all