When i go to a whore, its just sex, thats all. With an affair, a sustained reletionship with just one person, an emotional attachment would develop, which would have a negative impact on my reletionship with my girlfriend. Hope that makes at least some sense
So as long as there is no emotional attachment it is ok? But you still won't tell your girlfriend you are fucking other women? She shouldn't have a problem because you aren't emotionally attached. amirite?