yea blond girl has longer hair and dyed (back to original color i presume?) now 3 years later
i personally dont believe shes cheating but i guess u could believe either way. there's no definitive proof for either point but the subtext seems to his delusions of cheating are a product of deep anxiety and insecurity. but given her drunk behavior and how his other coworker warned him about her (taking that with a grain of salt tho) that isnt to say there may not be a side to her that could be cruel/vindicative, especially with the fact she seems to keep in contact with her exs. just a case to me, of just general anxiety on the part of the mc and the awkward dynamic their relationship started with--shes genuine enough for me and seems rather understanding of the mc's character