I kimd of am, why are so many relationships in media strsight? We need more lgbt representation

This is dumb and I'm probably getting offended for no reason but here's a small experience I dealt with recently

So like 30 minutes ago my grandmother wanted me to smile so she told me to think of a pretty girl and while I didn't react at all my first thought was literally "why not pretty boys" Its silly I know.

I'm not out but I literally couldn't be leaving anymore hints that I'm bi. Its funny how nobody noticed yet