Picture couples

Why do people always assume that a couple is together  whenever they take a picture together?

Source

The other day, I was going through Linda Ikeji's blog and there was a post when she was featured on the  cover of vanguard allure with Noble Igwe of 360nobs.com . The pictures were nice and beautiful and most of the people who left comments after talking about how beautiful she looked they also mentioned how good they looked together, how much of a couple they were, how Linda had snagged a catch, when they were printing wedding cards etc. I know this is just people talking and they don't even know these people personally so whatever they say should not be taken seriously.

Then it crossed my mind,what if these people are not even a couple like that? What if they both had people they were already committed to and this was all about work? How would their partners feel reading all those comments?  I remember going to a wedding once and I met one of my old school mates. We took a picture together and the guy posted the picture on Facebook. Most of the people who posted comments were asking if "she is the one?" and how good we looked together.  I am also guilty of this as I have also coupled people up based on pictures.