And to make matters worse,
Edward wouldn't accept Gaveston's exile.
Within two months, they were back together again.
Isabella had, though, clearly spent at least one night with her husband.
By the spring of 1312, she was 16,
and pregnant for the first time.
But instead of relishing her new status as the future mother of England's heir,
she found herself following Edward and Gaveston round the north of England,
with a hostile army of lords in hot pursuit.
Isabella was dragged around the country
as Edward tried to keep his lover safe.
But the group of lords chasing them, led by the Earl of Lancaster,
were determined to capture Gaveston
and end this destructive relationship forever.