In a committed relationship, it's easy to feel so comfortable that we begin taking each other for granted. Instead of being excited and engaged by our partner like we were at the beginning of the relationship, later on we tend to focus on the things we worry about instead, letting the romance and our fascination with our partner take a backseat to the stresses of daily life
Even as a teen, I found myself gravitating towards older, professional, rather bossy men -- and them to me. The thought of being a high-class hooker excited me, then horrified me the next moment. I was educated, I was a feminist, I was a social progressive: how, then, could I be turned on by the thought of serving some imposing man in a suit?
Once you cross the line, it's too late. If you or your partner cheats, you can expect up to two years, maybe even three, of hard work and pain to get over the betrayal. If you make it through, and you may, trusting each other again can take even longer. Preventing an affair before it happens is key.