When they are caught, many men will come up with phrases such as lack of attention, a girlfriend has gained weight, or they were just bored. These are nothing more than bad mannered excuses. Cheating on a person is wrong, especially in a committed relationship. If the cheater really wanted to solve the problems, they would address them instead of cheating. There are as many reasons why as there are cheaters. Some of the basic reasons are because of the thrill of the chase or the thrill of getting away with something. There are men who feel superior when they cheat and are not caught. None of these excuses or reasons really matter. If he cheats and isn't willing to fix the problems, he should be dumped.