So she navigates to facebook in 9 taps (facebook + select), while you get there in 16 (www.facebook.com)? Sounds to me like she's the one in the know.

No, he (like most of us) types `f` and the browser autocompletes.

Also my keyboard has a .com button, and I don't have to wait for two webpages to load, just one ;)

There is occasionally a valid reason to do this.

Lets say you are not sure of the url. Maybe you are looking to sign up for an account at actualwebsite.com but the real url is actualwebsiteinc.com, you're really better off searching for "actualwebsite" and clicking the 1st link google gives you.

Don't dump your girlfriend, she might be ok in the long run.