Superficial relationship stereotypes

yup

Not completely

That is correct. Pretty girls just see other pretty girls as competition. I am a woman and even I see this to be true. 2 hot guys, usually gay.

I think it just means people who are in relationships and the outsiders first impression of them.
And also guest: that's such a huge generalization. Not all women are like you or each other. I love that you commented that on a picture talking about stereotypes.