She'd better earn it

As soon as they were out of sight, you looked at Lily. There was only one possible question to ask, so you let her ask it.

She whispered, "we're her best friends!?"

You had no reply beside, "apparently?" Having paid very close attention to Isabella as she had walked away from you, you had to ask, "is it okay if she stays around for a bit?"

Lily paused, "I mean... she's," she finished with distaste, "Isabella."

Lily definitely had a complicated history with Isabella, but her anger had softened toward the end of her time with all of you. You smirked at Lily and took a chance, "you said she was getting really good at licking pussy."

She rolled her eyes at you, but the thought definitely gave her pause. You made one more offer, "how about the same rules as last time? You're in charge: you say the word any time and she's out."

Lily sighed, resigned to this new experiment with Isabella, "okay fine, but she'd better make it worth it."

Just then the tour of your reasonably small apartment seemed to be over. Emma and Isabella reappeared.

Isabella looked at you expectantly. You answered the question she obviously had, "Isabella, we know you're not the same person you were when we first met."

She looked hopeful and to your surprise, responded, "thank you."

You were a little taken aback by her candor and offered, "I think you remember how much it took to overcome Lily's anger with your before and you've come a long way, but I think it's going to take a little more effort now."

Isabella's eyes lit up. You pulled your gaze away from her and stepped toward Lily, "Isabella seems like she's being sincere," as you talked you grabbed the bottom of her shirt and gently pulled it over her head. You looked down at the lacy bra holding her little tits and as you reached behind her to unclasp it suggested, "let's give her a chance to show us how much she has changed."

As Lily's bra fell to the floor, some unexpected hands appeared between the two of you. You looked down to see Isabella kneeling beside you, reaching for Lily's waist and starting to open her pants.

As Isabella worked, you leaned close to Lily and whispered "remember, she was really good at licking pussy."

Perhaps slightly overwhelmed by the way her day had progressed, Lily stumbled back onto the sofa while Isabella freed her of her pants.

Isabella immediately scrambled between Lily's outstretched legs and you knelt next to her, "I think Lily is the one you're really going to have to convince," you took the chance to grab one of her tits. Even with a bra in the way, they felt great, but you sternly pointed out, "Isabella, you should know by now that you're overdressed for this."

You barely avoided flailing limbs as her clothes were thrown in every direction. You took in her body as she looked at you for approval. Looking wasn't the point, though. "You remember what Lily likes, right?"

She did and wordlessly leaned forward, tongue out, toward Lily's waiting pussy. You watched from as close as you could as Isabella buried her face into Lily.

Not wanting to interrupt, you gave Isabella's naked breast a firm squeeze and stood up to see Emma watching, slightly stunned. You stepped toward each other and immediately started pulling each others clothes off. Neither of you had any intention of passively watching the show.