Here are some statistics concerning infidelity in America:
Marriages where one or both spouses admit to infidelity, either physical or emotional: 41%.
Men who admit to committing infidelity in any relationship they've had: 57%
Women who admit to committing infidelity in any relationship they've had: 54%
Percentage of marriages that last after an affair has been admitted to or discovered: 31%
While in In The Family; A Proclamation to the World explained that a couple should "honor marital vows with complete fidelity (para. 7). Believe it or not there are different types of infidelity. In Successful Marriages and Families the four general types of infidelity are outlined. There is fantasy, visual, romantic, and sexual which are also divided into two categories of emotional and physical (Gardener & Greiner, 2012). The following information is found in the Book Successful Marriages and Families in chapter 6 titled "Honoring Marital Vows with Complete Fidelity" by Scott Gardner and Christian Greiner.
The following graph visualizes the types of infidelity
Type of Involvement
Type of
Relational Attachment Emotional Physical
Detached Fantasy Visual
Attached Romantic Sexual
Fantasy Infidelity
Fantasy infidelity means one is emotionally detached. That implies that they are having an emotional affair with someone who doesn't realize what's going on, someone anonymous, or will likely never be encountered in person. There is also the chance that all three could be a possibility. This means that imagination is taking over the emotions. If someone desires to have the affair they have already committed it.
Visual Infidelity/ Pornography
This is the most common form of infidelity. Usually this is because someone in the relationship are not satisfied with what they have and feel that they need more.
Romantic Infidelity
This category is a step further than just emotionally lusting after someone who isn't your spouse. Romantic infidelity implies a "second life" where you physically meet with another person. After awhile this pattern becomes normal.
Sexual Infidelity
This one is pretty self explanatory and it takes all of the other infidelities to get to this stage. While they are all serious this form is the most serious form because all barriers have been crossed.
Preventative Measures
Boundaries- Boundaries in marriages are something that will save the marriage. Here are some examples of boundaries;
• Don't share things that are deep with an attractive alternative, especially when there are marital issues
• Don't have lunch with or take work breaks with the same person all the time
• When you travel with a coworker, meet only in public places
• Don't flirt with anyone other than your spouse.
Saving a Marriage after Infidelity
Infidelity is a very hard trial for a couple to get through and most of the time marriages end in divorce, It's important to understand how to deal with it when it arises. It is something that will take much time to overcome but with the right tools it is possible to renew the friendship and love that the couple had previously. I think the greatest thing you could do is go to counseling together. It's not healthy to try to just fix it on your own sometimes having another person's input will help the marriage.

Sources:
Gardener, S. & Greiner, C., (2012). Honoring marital vows with complete fidelity. In A. Hawkins, D. Dollahite, & T. Draper (Eds.), Successful Marriages and Families (pp. 27-35). Brigham Young University.