Obviously

You leave Kinet to her rest, meanwhile you and Zatanna go into the room next door.

You close the door and begin to strip Zatanna while you lay gentle kisses on her neck, getting lower and lower, you give her breasts quick suck as you make your way down, until you finally get to that tight little pussy, you start fingering her while you lick her clit, her face goes red as you get her closer to orgasm, and then she has an explosive orgasm

Z: Oh MY GOOOOOOOOOOOOOOOD!!!

she collapses onto the bed as you take your boxers off, you're rock hard as you lay down next to her/

Z: your turn now

she gets up and starts rubbing your twin dicks with her hands, then she just starts rubbing one as she deepthroats the other, you feel her take all 14 inches right into her throat until her nose rests against your stomach, then she starts bobbing up and down faster and faster while she rubs your other cock with both hands, she continues this for the next 10 minutes, switching between hands and mouth on each cock, until you feel the pressure build in your sack.

You: Zatanna... I'm Gonna...

and with that she shoves down all the way on your cock as she rubs the other faster until finally you burst, your cocks throb as they shoot liters of sperm both inside her throat and all over her body, it keeps going for about a minute, you see her struggling for breath yet she doesn't even attempt to pull your cock out of her mouth, you actually think she just had an orgasm too, when your orgasm finally boils down you pull your cock out of her mouth and she takes a deep breath, she is completely covered in cum, head to toe, so the two of you head to the shower.

You both revel in the feeling of the hot water hitting your bare skin, she turns around and gives you a deep kiss, you expect to taste your cum in her mouth, but she really did swallow all of that cum.

You're still turned on and so is she, she turns around and puts her hands on the wall to steady herself as she prepares for the upcoming double penetration, knowing what she wants you RAM straight into her, impaling her your twin dicks, it feels even better than last time since there's even better lubrication than before.

You pull out nearly all the way before shoving back inside, and you continue to do so over and over again, while you're doing that you get close and start nibbling gently on her ear, the combination of rough and gentle is enough to throw her over the edge and she comes hard on your cocks, the feeling is exquisite and brings you to your own orgasm and you get yourself as deep as possible as your dicks let loose your cum deep into her womb and colon, filling her to the brim and then some as your cum spills out over your dicks while you continue to poor into her, after a few more seconds your dick relent as your supply runs dry at last, you don't know what's more impressive, that you can cum that much, or that she can take that much, either way, you're definitely satisfied, you pull out and turn her around before giving her a deep kiss as you say:

You: I love you.

Z: I love you too.

The two of you head back to your bed, as fall asleep cuddling each other.