I think based on sexual preference you probably have different ideas of what "sex appeal" means and what your reaction to X word is.
That being said, titles are there to tell you what something is about, and to get you interested. This does both, and part of this example is surely sex appeal. You can debate whether it was intended, but that's how genders work.
Being blunt, how many readers with a sexual preference towards females considered whether or not the girlfriend in question was attractive when they landed on her Google+ page? I suspect the answer is greater than 0.
Gender plays a role in everything, it's human nature.