how time goes by when thinking of you

i say good bye on the phone thinking wow i need to go to bed, then you come to mind, (not a good thing when you have to wake up early the next day) me thinking all the good things about you, it's three hours later that i realized i couldn't name them all and that you are the best thing that's ever happened to me and hoping that nothing ever changes between us, but that's unpredictable so i'll take it as it comes