My girlfriend and I both came out of sexually boring and unadventuruous relationships and have committed ourselves to keeping our fun, adventurous, and communicating what we like and don't like. We engage in "sexting", talk dirty in bed, and share our fantasies. While we love to slow down and make love we also like to heat it up and just get "freaky." Sexually, she does things for me that no other woman has ever done. I know I feel extremely gratified in my relationship and believe she does as well. I absolutely never have any desire to look elsewhere or cheat on her and this leads me to my question... Do you think people cheat because in each and every one of us is this carnal, animalistic, desire to get freaky and when that need isn't met, they pursue another sexual relationship? I think some couples for whatever reasons don't or aren't able to get that in their relationship and maybe one or the other or even both want it but don't. Your thoughts?