The Shadow of Your Heart

King Aerys Targaryen's extreme paranoia delays Rhaegar's betrothal to Elia Martell until he is twenty-two. But when the King suspects the Starks of plotting against him, he breaks the betrothal to promise his eldest son to the noble house's only daughter, Lyanna Stark.
The arrangement does not sit well with either party. The fourteen year old Lyanna resists her cage and her new husband; the older Rhaegar finds himself discomforted by her immaturity and willful nature. The king's madness worsens, and intrigue further interrupts the already volatile atmosphere of King's Landing.
In the North, Brandon's reckless behavior puts him, and Ned, in an uncomfortable situation, while thousands of miles south, the Martells stews over the insult paid to Elia. Somewhere in the middle, a storm lord still desires the girl he was meant to have while a lioness plots her way into power.
or
Lyanna marries Rhaegar and everything happens except love at first sight.