DAILYMAIL.CO.UK - A surge in post-holiday infidelity and relationship breakups has marked January as a peak period for marital tensions, dubbed "Blue Monday for relationships." Illicit Encounters, a dating site for affairs, reported a 33% rise in sign-ups compared to last year, driven by feelings of dissatisfaction and the desire for a fresh start. Meanwhile, "Divorce Day" sees law firms bracing for an influx of cases, with 80% of women expressing regret for not initiating divorce sooner. Key reasons for divorce include growing apart (54%), adultery (30%), and domestic abuse (24%).