Most Helpful Girl
when a guy cheats, it usually for sex, whether it's because he's not getting any, or he wants something new, or he's just a whore..
when a girl cheats, it's usually because she is just a whore or she cheats because she is getting the emotional attention he partner isn't giving her. she gets connected with this persob, falls for this person and ends up cheating with that person.1
Most Helpful Guy
Various reasons. The need for security, the need for compassion, the need for attention, the need for validation. All of these can also be underpinned by the likes of sexual addiction and/or narcissism.2