Prologue- You

How long have you and Mark been best friends? For as long as you both can remember. You're together all the time, almost inseparable, and are closer to him than most other people. Nothing seems to be able to get in the way of your friendship... Except maybe love. However, life isn't just a walk in the park; the sand seems to be slipping quickly through the hourglass and the time you have together seems to lessen and lessen. Time itself seems to be against you. How long can your love hold?

Author's note: I did do my research for this (like actual, genuine research), but if anything seems unrealistic, please let me know and I'll do what I can to fix it.