As John waited for the doctor, he studied Mandy’s Tinder profile, preparing for their date that afternoon. She was definitely his type, with sandy blond hair and grey-blue eyes. She, like most women on Tinder, enjoyed “yoga, wine and walks on the beach.” Through their text messages, he learned that she was an administrative assistant pursuing a nursing degree. Would she be the type who would pretend to be cool and then suddenly explode as he slowly lost interest, or would she be the sensitive, clingy type who wanted commitment after meeting for coffee?