Setup?

I started dating this girl that I initially met when I was with my ex. Didn’t think much of it at the time but in the near future I’d run into her. My exes and I relationship was a bit rough, I tried to open her up and show that she can be happy to and free thinking. We had a few wild sex moments in our relationship. That’s for a different time, but needless to say we split up. Shortly after I saw the girl I met through my ex. Now my intention wasn’t to make my ex mad about seeing her friend but this girl and I hit it off. Didn’t take many dates and she told me enough was enough that we were having sex regardless what her friend (my ex) would think of her. So we started having sex just casual nothing crazy. One night she wanted to invite a friend over so I invited mine over to. My girl and I joked and laughed it would be funny if they hooked up that night. We all got tipsy but surprisingly didn’t want anything to do with her. He caught a cab and she took the spare room. I heard my ex go into the shower, and my girl rolled over and pulling my dick out instantly starting sucking it. Holy this was surprising for her quiet self. I reached down and moved her panties to the side, and her panties were soaked within no word of a lie five minutes, I started fingering her and I could hear how wet my fingers were going in and out. We heard the shower shut off and like it was a signal my girl climbed on me and started to ride me cowgirl position. She grabbed my hand, brought it to her mouth and started to suck on my pointer finger. I couldn’t help but moan louder and louder seeing this side of her. She started moaning loud and started to say “is this what you want right now?” How bad do you want your girl baby?” She leaned forward, and started sliding up and down my long dick, deep and slow “don’t cum in me baby please okay?” She started moaning even louder we could hear her pussy smack against my balls loudly, just as the bathroom door opened I realized our room door was ajar, did she not close it? I could see my exes eyes widen as the light from the bathroom showed her silhouette and that she could see us. More so she could definitely hear my ex yelling “I’m gonna orgasm babe.” My ex just stood there for a moment as I stared at her through the crack, and she watched my girl ride my dick on the bed. I couldn’t help but want and need to cum right then and there. We just stared and that’s when she undid her towel in the hallway, her naked body just standing there, she did nothing but stare at me through the crack, and that’s when I exploded hard, I mean the type when you feel your load shoot within a girl and she squirms from her feeling it too. The moment my ex saw that I cummed she bent over, grabbed the towel and went to the spare room. My girl slid off me and whispered in my ear, “best revenge ever since my ex cheated on me with her and she doesn’t know I took her man once and we cheated on her. Now look who’s the better one.” Like did I just hear that right? Did these two have a weird love hate friendship? I got out of bed put on some boxes and went to the bathroom. It was really steamy after my exes shower, I just stood in there blown away that was this a setup to make my ex jealous? I could hear my ex talking in the spare room so I put my ear to the wall. She was on FaceTime talking or so I assumed because I heard her say “ yes I can you see you, can you see me?” I stood there listening, why no idea just curious after what she saw, would she tell someone? It went quiet, as I washed my hands I couldn’t help but get horny again, these girls are crazy. I tried to be quiet not to wake my girl walking to bathroom when I saw her door was open. I creeped to the crack and she was making a naughty video likely for some guy, she was in just some black panties, she was rubbing herself through her panties recording it. I started to get hard again, did she know I’d come look? I could hear her ever so slightly moan, god catching a girl playing with herself man what a turn on. My mind racing who was she gonna send this to, will she be a little slut and go further in the video? It took not even a few minutes and she slid her hand down her pants, starting to finger herself , hard to tell from the light on her phone only, I could see her hand going up and down faster and faster, as she’s squirming now, I always knew when my ex was gonna orgasm. She did one of three things, got really creamy, clear wet orgasm or if I got her really going she would squirt. This I could tell she was extremely wet and about to cum. She froze mid way, her hand stopped between her thighs and her body shook, as she dropped her phone I heard her orgasming in the dark. I just stood there really wanting to jerk off by the door. Just as I was about to walk into my room the door opened up, me not realizing she had walked to the door in the dark, door opened and with the most confident look I’ve ever gotten from a woman she grabbed my hand, and put her black panties that were damp in my hand and looking into my eyes said “ you can’t have me but you can smell and taste and feel what your missing tonight.” And she closed the door in my face. My question is does this happen to anyone or was it just a lucky and awkward moment in life that will likely never happen again???