When I was 26 or so, there was an older married couple that I had been friends with for a few months. I knew they had a pretty 'open' lifestyle with lots of sex, drugs, and partying, so when I was over at their place for dinner one evening, I mentioned that one of the things on my bucket list was to try MDMA. They promptly replied, "Why not tonight?" and offered for all of us to take some together, to which I eagerly agreed.

An hour and a half later, we were sitting on the couch, and the molly started hitting and we were all getting very cuddly, although nothing sexual. The wife excused herself for a couple of minutes for a bathroom break and came back wearing nothing but a crotchless black catsuit. She then promptly pulls out her husband's hard, and very thick cock from his pants and begins giving him a blow job.

After about a minute of me watching pretty wide-eyed, she turned me to and asked if she could suck me as well, and I bet you know how I answered...

Eventually, our remaining clothes came off, me and her husband took turns fucking her for the next hour or so. Taking a bit of a break from the sex, they started a conversation with me about what sorts of things I'm into and what my biggest fantasies were. After exhausting all the more vanilla stuff that I still wanted to do, I also mentioned that I sometimes fantisized about playing with guys as well, but had never done anything like that before.

At this point, the wife asked if I wanted to touch her husband's cock, and see if I liked it. I agreed, and before I knew it, we were jerking each other's cocks, while she intermittently sucked us. Eventually, I became curious to try that as well, and found myself sharing her husband's thick cock as we both licked its shaft.

This continued for a while, before the husband said mentioned that I had "an ass most women would kill for" and despite "not usually being into guys", asked if I'd ever wanted to feel a cock inside me. Very high, and extremely horny, I agreed, and lined up his cock with my ass, before slowly sliding it into my hole. I remember that it hurt a lot for the first few seconds, but then he began thrusting in and out, and hitting my p-spot, causing me to moan like a total slut.

I absolutely loved it, and we cycled through a bunch of different positions, before finally the wife lay underneath me, and got me to fuck her while her husband fucked me. He began fucking me super hard, and this caused me to immediately cum in his wife, right before he moaned and started filling me up too.

This was the first, but far from my last night of fun with them, and it went on to be a relatively regular thing for a year or so, only ending when a started a new relationship. (And then starting again when they seduced my new partner as well, but that's story for another day... )