The main reason why I love(and ship) Dramione is because of the delicious irony that surrounds it and because of the chemistry: The irony in cuestion is that Draco ended up following the footsteps of his aunt Andromeda.
Well, what I think it’s really ironic here is me putting 2 and 2 together. Funnily enough I’ve never ever given this concept enough thinking.
However, now that you’ve posed such reflection upon me...I guess it’s irony on the next level especially for someone like his Mother, Narcissa.
Since it’s the very first time I am navigating this speculation, I gather it kind of makes sense the obsession they had (Malfoy’s parents) for blood purity and the brainwashing they gave to the young Draco, the same perhaps with which they grew up with, and I am implying at the three Black sisters.
On ‘Harry Potter and the Order of the Phoenix’, chapter six: The Noble and Most Ancient House of Black;
‘Of course, any time the family produced someone halfway decent they were disowned. I see Tonks is not in here. Maybe that’s why Kreacher won’t take orders from her - he’s supposed to do whatever anyone in the family asks him—‘
‘You and Tonks are related?” Harry asked surprised.
‘Oh, yeah, her mother Andromeda was my favourite cousin,’ said Sirius, examining the tapestry carefully. ‘No, Andromeda’s not on here either, look—‘
He pointed to another small round burn mark between two names, Bellatrix and Narcissa.
‘Andromeda’s sisters are still here because they made lovely, respectable pure-blood marriages, but Andromeda married a Muggle-born, Ted Tonks, so—‘
Sirius mimed blasting the tapestry with a wand and laughed sourly.
Besides the fact that Narcissa is a believer of such purity of blood and preservation of magic, I do not doubt one second my - very personal - speculation that having her sister so ruthlessly cut off completely from her life in such a manner - a verdict of disownment, followed by elimination of her very existence from the family lineage tree - must have cost her a lot, must have hurt her deeply.
Perhaps something she promised herself to never go through again.
So yeah, I see the irony in having reinforced such importance of purity of blood and its preservation only for her precious and most beautiful son - practically Heir to tons of pureblood families - to give it all up for a muggle-born. History repeating itself, indeed.
P.s. well yeah, the chemistry is also what made me, literally, obsessed with them.