Is sexting cheating?

I was asked this question recently, and found myself baffled. Not by the question, but by the fact that I was asked it. Was this really a question? The answer seems about as obvious as wondering if wearing a habit denotes a person is a nun.
   This isn't about morality as much as it is about stupidity. Has the advancement in technology drained our brains of common sense? It kills me when someone blames advances in this arena for their complete lapse of judgment and goofball, juvenile behavior. Our cell phones' ability to instantaneously transmit digital photos and messages is not the problem.
   The problem lies within those who are dumb enough to believe that they can do whatever lame-brained thing they like and cross boundaries that used to be protected by decorum and manners--and dare I say it?--gentility. Some men, because most of the examples as of late are men, who for some reason have lost their minds, feel completely at ease and believe they are well within their rights to take photos of their nether-bits and send them to women.
   Imagine you go to your mailbox, pull out a packet, and stuffed inside are several photos of some man's groin. You call the police and file a complaint because clearly some pervert is on the loose.
  Or imagine walking down the street, and a man in a trench coat whips it open and flashes you. You scream, and call for the nearest cop to arrest him for indecent exposure.
   So why is it, all of a sudden, no longer an offense to expose yourself to someone? Does the medium make the act less onerous? I don't think so.
   The larger question isn't about whether or not sexting is cheating. It's about whether sexting should be legal, especially when the effects are just as upsetting and damaging as any other instance when a woman has to be subjected to lewd behavior against her will.