Metro-sexual..or..Gay?--why is that always the progression?

So last week I was watching Kourtney and Kim take New York (judge me if you want haha) and I couldn't believe that one of the main story lines in thier newest episode dealt with Kim mistaking a straight "metro-sexual" man for gay.  She then proceeded to try and set him up with her other gay friend.  Because she thought that he was gay she let him see her in the dressing room and he helped her dress.  She based her idea that he was gay based on nothing but stereotypes!  And then from there is got even more awkward when to guy had to tell Kim that he wasn't gay and she was shocked.  It is crazy how the crap that is on television (yes it is crap even though I do watch it) perpetuates societal problems on a daily basis.  Why does that guy have to feel guilty and feel like he needs to justify why he spends a bunch of time on himself and why he takes pride in how he presents himself. Who decided that it wasn't "masculine."  Just thought I would bring this up with the idea that we shouldn't take what we see on television as strictly entertainment, we should think about it in other peoples perspectives and be critical of what we are seeing.