So when you return to a regular girl that you haven't seen for several months and she asks you "how come you haven't seen her for such a long time"? Do you tell the truth and say "well, I got bored so I decided to see someone else for a while"? Or do you make up another excuse?
Now, obviously girls know that punters tend to see more than one girl, so subconsciously the question has already been answered. But due to courtesy and conversational etiquette what do you say if asked that question?