Nancy and Jonathan had an emotionally-charged moment - with a proposal - in the second part of Stranger Things season 5 but was the scene actually a breakup? During the second installment of the final season, which aired on Thursday, December 25, Nancy (Natalia Dyer) and Jonathan (Charlie Heaton) found themselves in a near-death situation. This led to a heart-to-heart where they reassessed their relationship - and admitted to holding things back from each other. Nancy and Jonathan acknowledged that their shared trauma kept them together. "It made me feel safe.