The feeling of being cheated on?

I am 22 and I have never been in love. I have had relationships but just have never found that someone. I was pondering earlier about infidelity. My best friend found out her husband had an affair and the effect it has had on her is huge. She won't talk about it much..But anyways, that's besides the point. I was thinking earlier what it would be like to be cheated on. I started visualizing guys i have come close to falling in love with, and what it would feel like to be cheated on by them. And i absolutely can not do it. To me i think its something that would have to be experienced to understand. Every time i think about being cheated on (which i never have been) i always imagine wanting to run back to that man and having that pionate reunion with him after everything we'd been through, and make him love me again. And i'm sure this is ABSOLUTELY NOT the case with other women who it has actually happened to. So i'm very worried. Does this mean i am masochistic, and would enjoy being wounded in a relationship and that i have some idea that that would bring more spark and into said relationship? or is this just because i have never had this personally done to me. Please write in what it was like for you to be cheated on, i am deeply simpathetic for those who have undergone this betrayal, and i would love to know what it would feel like and if i am crazy. Thank you ladies!