I am a lucky person, i have never been cheated on. I have never witnessed it either. Family, friends, nowhere.  If anything, it has always been me walking out/deciding to break up first when things obviously refuse to work out. 

I used to be as scared of being cheated on as the next person. I believe loyalty is high up on the list for most people. Nothing too terrible. I mean, yeah bad , but not so terrible that it affects my life. 

My last relationship ended by May this year. No cheating on any side. It did get very painful, but no cheating or even close. 

It left me with a very marked distaste for relationships. I decided to work on myself, which was actually positive. 

However , for absolutely no reason, for the last couple of months I have been feeling stiff scared of being cheated on. It is literally all I think of all day to the point of feeling nauseated and cry and wonder if all men cheat and can't even read *The Unbearable Lightness of Being* . I have just no clue what suddenly happened to me. But it did , and now, it is affecting my life and influencing my decisions. 

Why is it happening ? What do I do to cope ?