This is the list of my absolute favourite couples of the various series I enjoy.

Beyblade

Kai x Tyson
Kai x Hilary
Ray x Mariah
Julia x Mathilda
Kenny x Emily
Max x Hilary
Tala x Hilary

Cosgrove Hall

Igor x Nanny
Dr. Von Goosewing x Nanny

DCAU

Batman x Catwoman
Flash x Fire
Flash x Giganta
Flash x Linda Park
Green Arrow x Black Canary
Sam Young x Barbera Gordon
Superman x Lois
Terry x Dana
The Question x Huntress
Virgil x Daisy
Adam x Sharon
John Stewart x Shayera Hol

Disney's Duck universe(DuckTales, Darkwing Duck, Quack Pack)

Scrooge x Goldie
Scrooge x Magica
Flintheart x Magica
Donald x Daisy
Darkwing Duck x Morgana
GizmoDuck x Gandra

Mega Man Classic

Bass x Roll

Mega Man X

Dynamo x Aile
Zero x Iris

Mega Man Zero

Kraft x Neige
Zero x Ciel
Elpizo x Ciel

Mega Man ZX

Giro x Prairie
Thetis x Atlas
Truite x Melody

Mega Man Legends

Glyde x Denise
MegaMan x Tron
Glyde x Teisel
Glyde x Tron
Glyde x Roll

Mega Man Battle Network

Eugene Chaud x Mary Towa
Glyde.EXE x Roll.EXE
Lan Hikari x Mayl Sakurai
MegaMan.EXE x Roll.EXE
Lan x Iris
ProtoMan.EXE x Ring.EXE

Mega Man Star Force

Geo Stelar x Luna Platz
Aaron Boreal x Tom Dubius
Bud x Amy
Pat x Sonia

Mega Man NT Warrior

Chaud Blaze x Yai
Lan x Maylu
Glyde.EXE x Roll.EXE

Pokemon anime

James x Jessie
Tracey x Misty
Misty x May
Ash x Anabel
May x Dawn
Tracey x May
Tracey x Daisy
Butch x Cassidy
Drew x May
Jimmy x Marina
Brock x Pike Queen Lucy
James x Gardenia
Gary x Dawn
Paul x Dawn
Harley x May
James x Temaku

Pokemon Games

LeafGreen/FireRed Heroine x Rival
LeafGreen/FireRed Heroine x Lance
Crystal Heroine x Rival
Crystal Heroine x Eusine
Crystal Heroine x Lance
Ruby/Sapphire/Emerald Heroine x Brendan
Ruby/Sapphire/Emerald Heroine x Steven Stone
Diamond/Pearl/Platinum Heroine x Rival

Archie Sonic the Hedgehog comics

Antoine x Bunnie
Knuckles x Julie-Su
Knuckles x Sally
Locke x Lara-Le
Rob x Mari-An
Rotor x Mina
Julie-Su x Rouge

SatAM

Sonic x Sally
Antoine x Bunnie

SEGA

Knuckles x Rouge
Shadow x Amy

Fleetway

Shortfuse x Tekno
Super Sonic x Ebony

Sonic Underground

Knuckles x Sonia
Bartleby x Sonia

Teen Titans

Robin x Starfire
Beast Boy x Raven
Cyborg x Jinx
Kid Flash x Jinx