Maybe it's a sixth sense, or maybe it's simply an ability to read the (sometimes very obvious) signs, but most people being cheated on are aware that something is off. However, a bad feeling is not enough evidence to hold up in the court of relationship law.
Usually, discovering a partner's infidelity begins with a bad feeling, and ends with some kind of investigative work or simply a chance encounter with actual damning evidence.
But if there's one thing to be learned from the following stories, it's listen to that gut feeling. The gut is often right, even when it's trying to tell you something you don't necessarily want to hear.
Someone asked Reddit: "How did you find out your significant other was cheating on you?"
1.) From Linux4ever_Leo: