There's an old saying that my X used to say to me all the time "NEVER SAY NEVER AND ALWAYS"! Here's another one "sh*t happens!"

People do make mistakes and sometimes they learn from those mistakes and sometimes they don't. I believe that an emotional affair where someone is clinging to a person of the opposite sex outside the marriage(or long term relationship) and doing everything except for actually having sex with them but certainly in love with them is actually worse than if a person goes and has "meaningless" sex(an affair) with someone. JMHO.