I think the concept is definitely real (if the term disorder offends, maxwel, consider it similar to the idea that the grass seems greener on the other side)
if you look at this whole ashleymadison situation, you have a bunch of guys creating accounts, many of them spending actual money in the hopes of finding someone different than the person they're supposed to be committed to (i cant grammar, not sorry). the idea also manifests itself in apps like tinder....just keep swiping until you find the perfect person.
Those sites wouldn't draw so much traffic if it wasn't for 'menu disorder'...