I got same call asking about my electric company but only once.  I'm replying to you cuz I know what you mean by those types of girls.  My friend has a serious boyfriend and she has their pictures together on her FB page but she still messages other guys to keep tabs on them and also hangs out with a lot of them.  I tell her she shouldn't that cuz it hurts her boyfriend but she just says mind your own business.  What can you do.  Some people just have low morals.  Best to avoid them cuz they can bring you down with them.  Just like if you buy something from a telemarketer scamster!  LOL.