Why not a threesome with both?

After you finish eating, you say to Mel, "I'm gonna wait for you in your room."

"Sure thing," Mel says back.

"Of course," Rachel mutters sarcastically under her breath.

"What'd you say, Rach?" you ask her.

"Ummm, nothing..." Rachel says, not wanting more of your attention.

"Ya know what, Rach? You meet us there, too."

"Bro, come ooonnn! That's so unfair! It's not even 9AM and you already fucked me once," Rachel pouts.

"I'll see you up there, Rach," you tell her, not giving her a choice.

"Goddamnit."

Mel finishes up her breakfast pretty quick and finds you naked, hard, and ready in her room. Without skipping a beat, she lowers her pussy down on your cock and the two of you start making out passionately. You thrust up into her as she slowly bounces in cowgirl position, her big tits jiggling in your face. You help her pull her shirt over her head, and now Mel is completely naked. Mel softly moans as you take a nipple into your mouth and suck while your grab her other tit with your hand.

Mel's pussy gets tighter and wetter as you two fuck. As you hear Rachel coming up the stairs, you finish with Mel by giving her a quick little creampie and staying inside of her. Rachel finds the two of you making out, Mel's pussy slowly leaking out cum that drips down to your balls.

"Get a room, you two."

"Yeah we did. Rach, do you even know what that means?" you quip.

"Um yeah of course I do? It means-- oh. Shut up David, stop being annoying."

"Alright, both of you on the bed with your heads hanging off," you say.

Mel responds by giving you a peck on the cheek, Rachel with another classic eye roll. They both obey, and you immediately get hard again looking at their throats.

Rachel starts, "Ok bro, this is your one throatfuck I'm letting you have toda--"

*gulk gulk gulk gulk gulk gulk*

"Shut up Rach, I'll throatfuck you as much as I want. Eventually you'll learn to like it."

You switch over to Melanie, who is much less **** than Rachel. Melanie opens her mouth and accepts the throatfuck without a word. You grab onto her big tits to keep her still and you get a little bit rough with her throat, knowing that she can take it without gagging.

You switch back and forth between their throats, getting rougher as it goes on. "You need to learn to take it, Rach. Better now than later because I'm gonna keep doing whatever I want to you."

"Fine, whatever," she mutters.

You tell Melanie to turn around and get on top of Rachel. Now Melanie is doggystyle on the bed, and Rachel still has her head hanging off the bed. You stick your cock into Melanie's asshole and thrust away.

"Bro come on, I don't wanna do ass to mouth right now," Rachel protests.

Mel says in response, "Stop whining Rach. You don't see me complaining about it."

"Well maybe you should, 'cus I don't wanna keep doing th--" GACK GACK GACK GACK GACK GACK

You start viciously pounding into Rachel's mouth and throat as you feel your orgasm coming close. You finish by firmly grabbing both sides of Rachel's head and thrusting balls deep in her face. Like always, Rachel gulps you down as she struggles to breathe, which feels amazing against your cock. Her gulping gullet quite literally suctions the cum straight out of your balls, through your cock, and down into her stomach.
"Fuck sis! Your throat is so tight!" you moan, and you fuck in and out of her throat an inch as you pump your last ropes of cum. You grab onto her throat and feel her swallowing down the last of your load.

After emptying your balls in Rachel's facepussy, you collapse onto the bed, spent.