They may feel there not good enough to keep a person around or keep someone coming back or have insecurities to the point they think they aren't cool enough to keep a person interested.
besides that 10% of maybe getting bored, lack of sex, lose of love etc. Why do you guys think most people cheat?
Most Helpful Guy
I think it's not about lacking or they are not good enough, I think If a person values self-gratification more than the intimacy they gain from a relationship, then they will stop sacrificing for the relationship and are likely to end up cheating. If a person values the intimacy they gain from a relationship more than self-gratification, then they will willingly sacrifice some of their self-gratification to remain faithful. :-)