Moderate difficulty in finding something funny if you don't know the person very well.
Not being a 'touchy feely kinda gal.' AKA: Opting (every time) for a curt and polite nod rather than a hug and the (God-forbid) dreaded double cheek kiss.
Experiencing long periods of extended silence in which you genuinely can't think of what to talk to a person about because you aren't sure what is appropriate.
Extreme difficult carrying out 'small talk', probably due to the above point.
Showing more interest and enthusiasm for things such as dogs and food over other people.
Enjoying your own company and a night in with pizza and Netflix over going out clubbing and drinking every weekend.