Title of the series is credited to a similarly titled song, 'Gravity' by Sara Bareilles. Go on, listen to it if you haven't already. It's a beautiful song. Most of the feelings in the series will stem from the lyrics of 'Gravity', so know to expect a good dose of relationship angst (though I'll try to balance it with a lot of positive themes as well; I won't go overboard with the tears because really, I'm so tired of angst being the central factor of a Tom and Harry fic).