New Delhi, July 29 -- A 35-year-old man has shared the story of his heartbreak on Reddit. His girlfriend, 33, cheated on him with her gym trainer after over three years together.

The user said the pain wasn't just about betrayal, but how it could happen at any age. According to him, many assume cheating is common only in young or immature relationships. However, he was shocked to face it in his mid-30s.

The user claims to have supported her and believed in their bond. Yet, honesty was missing, he wrote.

The Reddit user warns others not to assume they're too old for such things. If trust and communication weaken, emotional and physical lines can blur no matter the age or maturity level, he added.

"Don't ignore your instincts. If you se...