What time of year do most affairs start?

When Affairs Are Most Likely to Begin

It’s a date few would expect: the second Monday after Christmas. While romance might seem more likely in spring or on Valentine’s days, research suggests this quiet winter week sees a surprising spike in infidelity. Behind closed doors, relationships strained by the holidays often reach a breaking point.

Holiday cheer can quickly turn to tension. Packed schedules, financial stress, and the pressure of family gatherings create a perfect storm. Couples who already face challenges may find the forced closeness of December amplifies their distance rather than healing it. The post-Christmas lull — when decorations come down and reality sets in — becomes a moment of reckoning.

That second Monday in January carries symbolic weight. It’s not just another day; it’s a pivot point. Resolutions are made, emotions simmer, and some people, feeling disconnected or unfulfilled, seek comfort outside their relationship. Social media and dating app usage rise during this time, signaling a shift from reflection to action.

Interestingly, it’s not about lack of love — it’s about lack of connection. The holidays often highlight cracks that were already there. What begins as emotional disengagement can, for some, evolve into something more. And in that fragile space between celebration and routine, affairs quietly take root.

Of course, not every relationship follows this pattern. But the timing reveals something deeper: how external pressures and emotional isolation can shape intimate decisions. The start of the year, meant for renewal, becomes for some a quiet turning point — not in ambition, but in the heart.