Okay, this is my opinion!BlossomXDexter- not a good couple,I mean first of all:
Blossom is just smart (BTW she isn't a dork)she uses her body and powers to fight .
While デクスター 〜警察官は殺人鬼 is this super genius (dork) who uses only science and machines to fight (and never powers that are 与えられた to him によって nature).
Second:
Most of the time she likes work in a team .
While デクスター 〜警察官は殺人鬼 likes to work alone.
And Third:
She doesn't use science ALL THE TIME to solve her problems.Oh, she doesn't brake her promises even if it's REALLY serious.
If あなた ask me BrickXBlossom is a WAY better couple.
Because :
They both aren't dorks just smart ,they're both long red heads ,both use they own powers in battle ,
both work in a team,they're both the leaders and smart ones of the group,both parent they're team,
they're never lazy または rude.And I don't care if they're enemies - maybe Blossom secretly loves Brick and he's mean to her because he likes her.
OK so that's it , hope u liked it.Bye!