User blog comment:TDIwriter/Sprinklemist: The All-Star Rankings/@comment-1153194-20101213211729/@comment-1590625-20101213214447

See, I wouldn't really consider it cheating for a few reasons, namely the fact that both immediately regretted their actions, and said they would never do that again, and also the fact that it was a one time thing. It was not a full-blown relationship on the side of another, committed relationship. Sheena is not Jon's mistress or anything, he is still loyal to Dinah the same way Sheena is to Grant.