My wife and I have an affinity for Latinas and Oriental / Asian women. I'm 49, and my wife is 45. My wife is bisexual, we've had a few threesomes with ladies we've met at bars and my wife really had a taste for some Latina pussy, so we looked up an escort service. I brought up that most escorts have limitations, and we should probably just put up an ad on a swinger site. So we did.
"Looking for our Latina Unicorn"

It took a bit to weed out incompatible people, or guys looking to fuck my wife (and me). A lot of guys will put on lipstick and a dress and have their cock hanging out like "I'm what you both need" - and it was getting frustrating. Finally we had a bite. This sexy big titted Latina who lived near our area was interested. We chatted with her online, exchanged phone numbers and invited her out to dinner so we could get to know her. She liked us, she flirted not just with my wife but with me too. She was telling us that she really wanted some desert after dinner. It was my wife who put the breaks on.

"Let's slow down, we'd really like to get to know you..." my wife said, my dick was disappointed lol - I wanted to fuck this 30 year old babe right on the restaurant table. Her name (I don't even care about censoring her name), was Julieht. When my wife said to slow down, Julieht pouted, her lower lip curled in disappointment.
"Are you two looking for something long term?" Julieht asked point blank.

"Long term? You're pretty young, having fun with two people in their mid to late forties is one thing, but how can you figure we'd have a long term relationship when you'd eventually want someone younger?" My wife kicked me under the table.

Julieht, probably saw me wince in pain, but ignored it, "I've been a unicorn before, to couples younger than me to couple's in their 60s," she kind of shook her chest so her titties would jiggle and winked, "and let me tell you - all of them wanted more of me. Most girls want that white picket fence, a house and a husband, I just want a home to cuddle with two people I'd love to spend the rest of my life with."

I could see my wife blush, and her chest was turning a bright pink - when my wife's chest turns bright pink, she's horny - and I always use it as an indicator of how close to an orgasm she is. My wife was turned the fuck on.

"I'm on the pill, so I won't get pregnant," Julieht said after a bit of silence.

"He'd wear a condom," my wife said, almost like she was negotiating with Julieht on what is off limits.
Julieht leaned over and pecked my wife on the lips, "I don't have any allergies so that's fine."

We talked more, got to know more about her. Turns out she's a beautician, and doesn't work too far from our house - just about 4 miles from us.

I became the skeptic, for once, and asked, "why would you be attracted to an older couple like us? You're very beautiful, and young..."

"I was married once, I have one child and she stays with my mother back in Bogotá, Colombia. My husband worked for the wrong people... with drugs. He's dead... so I'm a widow."
My wife comforted her, "I'm so sorry, that's horrible!"

Julieht continued, "I was forced to do terrible things, it was always the younger guys having their way while my husband watched. I was married at 18, and I thought he loved me but he got involved with really bad people. An older man took me under his wing and helped me escape to the USA when I was 20. I've been here 10 years. So I like older people because they are a lot more mature... they're more straight forward. My husband was killed probably because I left, but I couldn't handle the abuse anymore. I wanted to bring my daughter, but couldn't. I call her when ever I can."
Julieht started to tear up, my wife scooted over and put an arm around her.
"It's ok, no one should ever have to go through that."
I looked at Julieht, I was at a loss for words so I told her, "You're welcome to spend the night with us if you want, I know you've been through a lot."

So she came home with us, she followed us in her little car and parked in our driveway. We all went inside. Julieht immediately started to take off her clothes, and groped my wife's breasts. My wife laughed, "oh you're a horny bad little girl," my wife said.
My dick was instantly hard. At the request of my wife, I put a condom on and we all got busy. Julieht had a HUGE rack, her tits were gorgeous (I wish I had pictures of them!). I'd fuck my wife, then I'd fuck Julieht - we'd swap around, the women eating each other out while I fucked them from behind. Once my wife came, I wanted to make Julieht orgasm, so I had my wife lick her huge tits and play with her clit while I fucked her missionary.
Julieht was a squirter. Juices sprayed all over my cock and balls as I thrust deep inside her, and my wife massaged her clit.
She convulsed tremendously and screamed (laughing) "OK! OK STOP!! STOOOP!" as my wife giggled.

I got off of her and Julieht said, "it's you're turn," and looked at my wife, "can I ride him? Can I make him cum?"
My wife slapped Julieht on the ass, "fuck that dick," she said licking Julieht's lips with her tongue.
I laid back and Julieht got on top. Her pussy wasn't super tight, but it was nice. The condom was probably inhibiting a lot of the sensation. Julieht began fucking my dick, pumping it up and down as I played with her tits. My wife was caressing Julieht's ass, fingering her little asshole. Julieht moaned and stroked my cock with her pussy. I pushed deeper inside her, an pulled to the edge of her lips and thrust back in... the sensation was so warm, so wet. Those beautiful tits bouncing in my face, and her hot wet pussy set me off. I came. My wife, smacking Julieht's ass telling her "take that cum, take it..." and Julieht riding me faster as I came more and more.
Julieht got off me and the condom was gone. My wife panicked. I panicked. Julieht made a weird face and put a few fingers inside her pussy, and pulled out the rubber. It slipped off!

My wife was freaking, "are you disease free?? Are you sure you're on the pill? What are we going to do?"
I took a deep breath, "it's fine babe -"
Julieht was a bit offended, "Of course I'm disease free, what the fuck?"

My wife apologized and tried to calm Julieht down, but the damage was already done. Julieht was gathering her clothes and getting dressed.
My wife shot me a look, like "DO SOMETHING!"
So I said, "she is just concerned, we just literally met you and - it's just a question. We both really like you and-"
"And WHAT?" Julieht stammered, starting to cry.
"And we'd like to continue seeing you!" I said.
"I'll have to think about it, but we can't have issues like this. I don't have any diseases. I may be a fucking whore, but I'm clean!"
"you're not a whore," my wife said.
Julieht left.

This happened 3 months ago. Guess who is going to be a daddy? Me.
Wife is pissed, but is ok with Julieht coming over and us spending time together. Not sure where this is all going to lead. My wife isn't leaving me, and I have a pregnant 30 year old unicorn to deal with.
I'd say fuck my life, but I'm not at that point yet. I did tell my wife that there needs to be a paternity test to see if the baby is actually mine... as I'm not sure how many guys Julieht has fucked since we were all together. Enjoy the pictures... unfortunately none of them are nude.

TLDR: wife and I got a unicorn, we fucked, the condom came off before I came and I got her pregnant.