Is it possible to find out who has viewed your Facebook profile?

[SummerRain]

I know this question has been asked numerous times, but my sisters computer broke down, so she has been using mine to do work and such, however, she likes this guy on Facebook, she doesn't have a Facebook page of her own, so I would let her go on mine to do whatever, so she would search the person and was able to view his page because it was set as an open profile, I don't have this person as a friend on Facebook. She has been doing this for the past 3 weeks or so, and she would view it daily. However, she doesn't have any classes on Wednesday's, so she decided to go on my Facebook again to search this guy just late last night, but when she went to his profile, it was then set to private and she couldn't view it anymore. For her benefit she was wondering if it was possible for him to see a person who wasn't on the friends list was viewing the profile? And of course for my benefit, I wouldn't want my name to show up since she was searching him and not me. Thanks!