Oh jeez. Take a joke man!
I've never made out to music (-_-) but in my mind, My Dying Bride is the ultimate make out music. I could totally have some serious romance to 'Black Voyage', 'The Sexuality of Bereavment' or 'The Thrash of Naked Limbs' I mean, look at the titles! I would also totally do some bangin' to 'A Cruel Taste of Winter', 'Transcending (Into the Exquisite)' or 'The Snow in My Hand'. Yes I would.
In stakes of artists that are not My Dying Bride, other awesome sexin' tunes include:
* Killing Miranda - I Know What You Want (A Bit obvious: "I'm gonna fuck you hard! And do it all night long!")
* Any sexy Inkubus Sukkubus track ('Take the Kiss', 'Vampyre Erotica', 'Young Lovers', 'All Along the Crooked Way', 'Nymphomania' etc.)
* some Cradle of Filth (particularly 'Venus in Fear', 'Dusk and Her Embrace', 'Gothic Romance', 'Portrait of the Dead Countess', 'Of Dark Blood and Fucking', 'Her Ghost in the Fog', and, I say it with shame, 'Nymphetamine Fix')
* Old Theatre of Tragedy ('Black as the Devil Painteth' and 'Hollow Hearted, Heart Departed' en particular)
* Sisters of Mercy ('Bury Me Deep', 'Driven Like the Snow', 'Cry Little Sister' for the more romantic, 'Vision Thing' and 'This Corrosion' when things get serious).
* Juju era Siouxsie and the Banshees
* Skyclad - Spinning Jenny ("She'll exorcise your demons, then exercise 'yer thighs, await your second coming with a hunger in her eyes!", also 'Polkageist!' and 'My Mother in Darkness', minimum!)
* some really dirty sludge. (Syrafex - Taken as Pain, Electric Wizard - Dopethrone, Overlord - Pit, and of course Acid Bath - Cassie Eats Cockroaches ("Cassie loves to swallow, this bleeding will not stop, I left Cassie hollow, cut her with my cock!"
* hard rockin' stuff (Venom - Countess Bathory, Judas Priest - Living After Midnight, Iron Maiden - Bring Your Daughter to the Slaughter, Alice Cooper - Poison (best stripping song EVER), Viking Skull - Beer, Drugs and Bitches, hell, maybe even Lordi - Fire in the Hole or Dynamite Tonite if my partner is cheesy enough)
All I can think of atm, though it might be fun to grind to some death or gore metal/grind. Cattle Decapitation - Bukkake Tsunami or Gorerotted - Fuck Your Arse With Broken Glass maybe?