I mainly read slash fiction. I prefer angsty love shit, with few, but very hot lemons. I need happy endings.

Twilight:

• Emmett / Jasper
• Emmett / Edward
• Emmett / Carlisle (never read, but seems nice)

(Anything Emmett slash would do I guess, might even work with Jacob, even though I'm not a fan of him)

• Edward / Seth
• Edward / Carlisle
• Carlisle / Charlie
• Jasper / Edward
• Jasper / Bella <-- My only favorite heterosexual couple

Conclusion: Mostly any gay coupling of the main vampires in Twilight are more than welcome. I love it when they remain vampires in the fanfics, but AH is okay.

Other:

• Harry / Draco (Harry Potter)
• Ianto / Jack (Torchwood)
• Jack / Owen (Torchwood)
• Spike / Angel (Buffy)
• Justin / Brian (Queer as Folk)
• Zach / Shaun (Shelter)

Crossovers:

• Emmett (Twilight) / Emmett (Queer as Folk) <-- I would die for a long angsty slash fiction with these two hot studs as a couple! In my fantasy Emmett from Twilight is a closet case, and not at all ready to be outed, but he falls head over heels in love with the twink Emmett from Queer as Folk. Something along the lines of How to Turn a Straight Guy Gay, only less comedy and more angst.
• Willow (Buffy) / Jessica (True Blood) <-- If someone would've written this, it would be the first and only femme slash I would (ever) read. It's double dose of redheaded perfection! H.O.T.