Did my [M 25] threesome with my girlfriend and buddy [F22, M 32] turn into some kind of cuckolding… [cuckold’s perspective]

**backstory**
My girlfriend (F 22) and I (M 25) had a few weekends ago our first MMF threesome and I don’t know how it went besides the fact that we both enjoyed it.
Let me tell you in detail:
My girlfriend and I had prior to this 2 FFM threesomes, both initiated by my girlfriend and her friends. Both happened after we were clubbing, it wasn’t planed and neither was our first FMM one.
**at the club**
It was a Saturday night and we were at the club running into my friend (let’s call him) D (M 32). He is a pretty talk, muscular guy, charming and pretty much always with a woman on his side haha. We drunk together and I realized at one point how both were flirting a bit. It wasn’t disrespectful but still a bit pushing my comfort at first. The more I drunk the more we all joked around the looser I got.
At one point when D was gone for a second my girlfriend said with her typical smile “I think we should take him home tonight.” I wanted to say something, I really wasn’t sure if I wanted that (I had MMF’s before and enjoyed them but non was with my girlfriend) but then did D come back already and I didn’t say something for the rest of the night. Maybe I did secretly want it too.
**heading home**
At one point i asked if we should leave and my girlfriend directly said as a follow up that the idea of an after party at your place would be such a great idea. D agreed, I’m pretty sure he knew what would happen, and we left to our place.
We took an uber and headed home. Once in the house did we make another drink and headed to the living room. There it started that my girlfriend started to make out with me passionately for a few minutes till she stood up, walked over to D and held her hands out bringing him to stand up. As both stood there he wasted practically no time and leaned in kissing her. I saw her lean in and him starting to feel up her ass. I can’t deny it, I got so turned on seeing that it was strange.
After a maybe a minute? It felt like hours did they part and my girlfriend suggested we should head to the bedroom.
**in the bedroom**
In the bedroom my girlfriend started right away to make out with D as I watched from the side. For a bit they felt each other up and then I saw D unzip his pants. I had a weird feeling of competition and started to undress my self revealing my rock hard cock.
I’m my self 8 inches and know how to use it so I wasn’t really intimidated when entering the situation. Still D was 9 inches and a bit thicker.
My girlfriend smiled wide seeing his size (she is a “fan” of big dick) and started to stroke it slow as I finally stepped behind her and started to undress her. While doing so did D’s hands start to discover every inch I freshly revealed of her naked body.
**the blowjobs**
As she was fully naked my girlfriend dropped to her knees starting to take D’s tip in her mouth and slowly beginning to suck his cock. I position my self sideways as she tried to fit the thick cock in her mouth. After a few minutes did she still suck him eagerly while I stood there jerking. Now i finally made the step forward clearly presenting my cock but my girlfriend didn’t stop sucking dick who only had eyes for her. At one point I laid my hand soft on the side of her head trying to ask for her mouth too. Still for the next one or two minutes did she fully focus on D.
Then she finally stood up, smiling as usual and taking my hand. She lead me slowly to the bed, laying me down so my back laid against the beds head. She then got on top of me bend over and finally sucked my cock as well while D stood right where she sucked him a minute earlier jerking his cock.
As usual was my girlfriend greedy and eager and while i usually got great stamina could I feel that i slowly started to struggle in that moment. Especially the thought that she just had D’s cock in her mouth, the mouth that was now taking in my own cock drove me wild.
**starting to fuck**
Still I lasted till D slowly got behind her. His hands roaming over her body till he pushed her higher right above my cock. She understood and guided me with her hands in her all while D’s hands were on her hips. She started to ride me while D’s hands started to grab her boobs from behind, slowly punishing and twisting her nipples. I started to move my hips as well all while she moaned louder and louder. My hands caressing her thighs as she rode me. By now was D kissing her neck what drive me wild again. I kept thrusting till I felt her vagina pulsating and cramping around my cock while her legs shook and her moans became animalistic groans. And while she leaned back against D. Once her orgasm calmed she dropped forward and kissed me slowly sliding off my cock.
**D’s turn**
Meanwhile did D put on a condom and now pulled her back so her upper body laid on my thighs her head right in front of my drenched cock. He slowly slid in and the face of my girlfriend was insane, she looked as if ripped apart in the best way possible followed by loud groans. D slowly started to pound her as I started to stroke my cock in front of her face. He got faster and faster, from time to time slapping her ass. Her moaning groaning and then even moaning his name…
Then she came on his cock in groans as she showed me her O face. D kept going and going even as her groans turned back into moans, her legs slipped a bit spreading her self even wider and laying even more on me.
**D8s finish**
When she looked up at me I couldn’t help it but hold my cock up to her offering it, asking for her mouth. Once more did she smile and then shook her head with this smile on her lips. It was so hot I stopped stroking taking and holding her hands. She smiled wider but also softer and grabbed my hands as D kept to fuck her.
D kept going for a bit more, my girlfriend still moaning on his cock, still saying his name till D started to moan louder and louder moaning that he will cum. He thrusted a few more times, hard and powerful before he shouted as he came in her and yes I think she came again in that moment as she looked at me with that wide open mouth and that in pleasure cramping face.
Then he pulled out of her and she sunk fully down on me looking up smiling wide and pleased breathing heavy. D smiled at me, got up and slowly started to dress saying how much fun it was. My girlfriend agreed with him spend, out of breath but enthusiastic. A bit later did D leave.
**the aftermath**
My girlfriend got up, strangled me and started to make out with me. We kissed for ages and I started to stroke again till I asked her if she wanted to fuck again and that’s when it happened and she said she’s too spend. She started to jerk me off, dirty talking about what just happened and how much she enjoyed it. I moaned somewhat agreeing with her. After a while did she start to talk about how D felt, how his dick tasted and how his dick felt inside her. Then my body started to shake and I came in her hands as she smiled calling me a “good boy”.
The next morning was incredibly, we had amazing sex she titled as “even better as last night!”

Now is my question, did I got kinda cucked? I’m not sure…

Who’s wondering, yes my girlfriend is a bit dominant with me and even locked me, for a few hours, in a chastity caged before.