In Love With The Hybrid

her name Athena Salvatore his name Niklaus Mikaelson. She's 580 years old he's over 1,000 years old. She is immortal so his he.
They Hate each other, He killed her son, they've been going at each other since the 1460's and haven't stopped he follows her everywhere and she follows him everywhere,
They torture each other, she still feels the pain of the son she lost but what happens when
One night they fight together...could this be the beginning of a new alliance, romance, friendship will she forgive him for what he took from her?