ONE.
luna sacrificed her relationship with her pack to help klaus
TWO.
she didn't get made at klaus for the crescent curse being enabled again
THREE.
klaus always visited her on the full moon, the only time she was human
FOUR.
he had freya undo the crescent curse for luna's sake
FIVE.
she confessed her love for klaus over the phone even though he 'loved' aurora
SIX.
gave her a moon necklace representing their love
SEVEN.
klaus saved her from aurora's turned vampires
EIGHT.
klaus offered her to stay with him until she was safe
NINE.
she got him the same crescent moon necklace to klaus
TEN.
klaus confessed his love and kissed her, and got back together on Christmas and had sexual intercourse
ELEVEN.
luna took a bullet for him
TWELVE.
luna is carrying a mikaelson in her belly
THIRTEEN.
called her family rather than kol
FOURTEEN.
gave her the title of Queen of New Orleans
FIFTEEN.
she saved klaus from aurora
SIXTEEN.
klaus made luna suffer less from her fatal bite from lucien
SEVENTEEN.
sacrificed his unborn child to let luna live
EIGHTEEN.
luna didn't let klaus say his goodbye because she knew that they would find their way back to each other
NINETEEN.
luna is pregnant with klaus's child again
TWENTY.
she and hayley are determined to find the cure with Luna ready to fight her way to klaus