something like laughter

i have this thing while i'm at work: i like to guess things about people. for instance, when a couple comes in, i try to guess (without looking at the hands) whether they are dating or married. or when 2 females come in, i try to guess whether they are just friends or a couple.
so i was at work the other day, and this guy and girl come in, and they're looking around and joking around and stuff. generally looking like they were having a great time cutting up and etc.
without realizing it, i caught myself thinking "hmmm yeah these guys must not be married. i mean, look at how much fun they're having together." and then i realized what i just thought.

damn. really?
is that the first idea i have about marrage?
that if people are happy together, they must not be married?
if they're not arguing they must be dating?
i mean, this is a sad, sad thing.

but looking at it, i can't think of a particular instance that i would have contracted this idea from. i mean, (aside from this one couple i know... (and no, neither of them would be reading this)) it's not like any of the married couples i know spend all the time fighting.
so where would i have picked this up from?

so anyway, yeah. that really disturbed me.