Gentle to start

As your dick is already wet from the blowjob Scarlet gave you and the amount of time you spent destroying Lily's pussy so the head of it slides into Scarlet's asshole easily. You start pushing more of your dick in and you see her sigh in pleasure. At the same time you can feel the strap on ramming in Scarlet's pussy over and over again. Lily has clearly had some practice with girls.

You proceed to keep pushing more of your dick into Scarlet's ass until all 14 inches are inside her.

"Fuuuuck, that feels so good" Scarlet moans

You let Lily pound her for a few minutes while you just let Scarlet get used to having your dick fill her up. While this is happening you are caressing her breasts. There's your cum on them but you just massage it into her, occasionally getting her to taste the cum on your hands.

After a while you've got bored though so you pull back your dick until only half of it is inside Scarlet's ass.

"Wait where are you goin.." Scarlet starts before you slam your dick back into her. From this point on your start pounding her asshole and timing it so you and Lily are both inside at the same time and pull out at the same time.

"Suck on her tits while you fuck her, Lily" you command her

She does as you ask without an "I wish" so she is clearly enjoying your company. You can see her lapping up your cum from Scarlet's chest and you're not sure but it looks like she is getting turned on from the whole thing.