Open the relationship a bit...

“Wow.” you say, catching your breath. Amy was quite the fuck; Craig really was one lucky guy.

Amy's attention is still firmly on Chelsea, heaving in residual post-orgasmic bliss on the bathroom counter. Amy licks her lips. “That…might have been one of the sexiest things I’ve ever seen.” she murmurs.

You smile at her unprompted confession. “Want to be a more…active participant?” you say with a smirk. You look to Chelsea and Rachel, still lovingly gazing into each other's eyes. “Hey, you two. You think my friend Amy’s pretty hot, don’t you?” The girls are almost surprised to see you still there. They break their embrace, each giving Amy a once-over.

“Oh, definitely hot. And you know I’m a fan of blondes.” Rachel says, winking at Chelsea.

Chelsea returns Rachel’s look with a grin before looking appreciatively over Amy's body, her green eyes tinged with desire as they linger on her curves. “You don’t have to be into blondes to see that she’s sexy. I’d do her in a heartbeat if I was single.”

Hm. After what had just occurred, it was easy to forget the two now-lovers still considered themselves exclusive. That should be easy enough to change. “Monogamy sounds so unsatisfying though, doesn’t it Chelsea?” you drawl after a moment of thought, shaking your head. “I think you’re the type of girl who could never be content with having just one partner. Tall or short, skinny or chubby, older or younger, you just want to fuck as many attractive women as possible.”

She nods, smiling as her head fills with new possibilities. You admire how you could make values which had been instilled in her for years vanish in two sentences. “Damn right. Having sex with one person, day after day sounds so…boring." says the blonde, rolling her eyes. "Especially with so many beautiful women out there to-” She stops abruptly, catching the horrified look on her lover’s face. “Sorry Rach, I…“

“Oh, I don’t think you need to apologise.” you say, turning to the athlete. “Rachel, sex is great, but masturbating while watching Chelsea with another woman gets you off harder than anything. You actually prefer it that way, and Chelsea knows it. You’re not jealous that she can’t be satisfied with your body alone. You’re only happy that she’s happy. You *want* her to fuck as many women as she can. You still love each other just as much no matter how many women she’s with. That’s why you’re perfect for each other.”

“We are, aren't we?” Rachel says, her horrified look fading as her feelings of betrayal give way to arousal. “I don’t know why some people get jealous of their partners fucking someone else. Personally, I want to see her with as many women as possible. It would be a crime to not let someone that hot be with anyone she wanted.” Rachel says, as she gives Chelsea a sly wink.

“Hey! You’re gonna make me blush!” Chelsea giggles. She gives Rachel a tender look, gesturing to Amy. “So how about it Rach? Wanna see a little blonde on blonde action? I bet you’re getting wet just thinking about it…”

“You tease!” Rachel whines. “You knowww I want to watch.” her hand moves unconsciously towards her inner thigh. “Can you? Please?”

“I’m game if she is.” Chelsea laughs. She sidles up to your best friend’s wife, who is frozen like a deer in the headlights at her approach. “So? How about it?” she half-whispers, eyes smouldering with lust. She poses unashamedly in front of Amy, arching her back and accentuating her curves. “As you might have heard, my girlfriend could use a little release.” Chelsea grins teasingly at Rachel. “And personally, I think you’re hot as fuck.”

Amy gapes at her, licking her lips unconsciously. “I…” she darts a glance at you, blushing adorably. “I don’t know…maybe…just a kiss?”

“It always starts with just that…” Chelsea says teasingly. She steps forward until she is nose to nose with Amy, resting her arms gently on her shoulders. Amy’s face is scarlet, pointedly avoiding eye contact with the girl, arms posed awkwardly by her sides. Chelsea giggles. "Nervous? It's okay, I've never done this in front of my girlfriend before. So I'm under a little pressure to put on a good show."

She smiles, and wasting no time, quickly leans in to plant her lips on Amy’s own. Amy uncertainly returns the kiss, a kiss that quickly becomes more forceful as the girl’s tongue presses against her, the tenderness giving way to Chelsea’s passion. Amy accepts this first with hesitation, then with increasing fervour, eyes closed as she leans more and more into Chelsea, fully caught up in the first lesbian make-out session of her life.

Meanwhile, you watch as Rachel sheds her clothes, revealing her taut abs and toned muscle. She brushes her dark hair out of her face, and quickly reaches a hand towards her privates, staring intently at the two entwined women. Looks like you’re not the only one appreciating the scene. But what to do next?