After what happened with Anja and Katarina, my life got complicated. For starters, a girl who was obviously far from being as naive and innocent as she looked had some very incriminating photos of me, naked in public, worshiping her feet, and cumming on my unaware good friend. So far she made no suggestion that she would expose those photos to anyone, and I sure wasn't going to ask and give her ideas, so I decided the safest bet was to try and stay on her good side and not make any waves.
Also, the fact that I did cum on Katarina while rubbing her almost naked body started stirring some previously unknown urges towards her within me. We were very close friends for a few years already, and I never looked at her that way before, but now I found myself unable to delete or even stop looking at the provocative picture of her that Anja sent me.
In the meantime, Anja, probably having noticed that I didn't oppose her as much as before, kept getting more brazen in her advances on Katarina. She would playfully grab her ass or boobs whenever she got the chance. However, it stopped being so fun for Katarina, she probably got bored with it, and me not making a commotion whenever it happened probably helped in some weird way.
But still, she was kind of used to it, so she didn't stop Anja, and Anja, for her part, took full advantage of it, and she seemed to have started going out of her way to do it in front of me, as if to coax some kind of reaction from me. She also started showing off her feet as much as she could, which had to be connected to what happened between us. She'd always wink at me and grin when she caught me staring.
What's more, I wasn't sure if I was imagining it, but other girls we hung out with also seemed to show off their feet when I was around, and they seemed to suddenly love getting flirty and teasing me sexually. I wondered how much they knew. Did she tell them what happened? Did she show them the photos? Was I just imagining it? No way to know without making it worse.
Then one night, when we were all at a house party thrown by another of our mutual acquaintances, Marija, things escalated. As we were all dancing, Anja pulled me to the side and told me it wasn't fair that only I got to cum at the pool, and that I owed her an orgasm. I asked her wasn't she into girls, and she told me to just shut up and follow her.
She led me into an empty room, and told me to get naked and lie on the bed. As I did, she took off her panties, hiked up her mini skirt, and sat on my face, facing my legs.
She started stroking my cock, and I started licking her. Then, all of a sudden, the door opened, and in walked Marija, locking the door behind her. I seemed to be the only one surprised by this, though, as she calmly walked over, and Anja continued what she was doing unfazed.
I should probably tell a bit more about Marija. She was a somewhat controversial girl. She was pretty good looking (although not as hot as either Anja or Katarina, but definitely above average), and acted very confident, and had a great sense of style. She studied medicine, and was doing pretty good at it. And she was also known to be a major slut, and anyone who wasn't as shy and awkward as me could get her easily. Her Instagram profile was full of topless or nude "artistic" photos I regularly jacked off to.
So, when she locked the door and walked over to the bed, I thought I had hit the jackpot. She got naked, got in front of Anja, who was still sitting on my face, and straddled my stomach. I felt her take my hard cock in her hand, and then I felt a needle sting my cock. Then another one in the area just above my cock.
As I saw two empty syringes get discarded on the floor next to the bed, I wondered what I was just injected with. Marija then explained that, while she got lots of cocks all the time, she rarely got truly satisfied, because guys either come too fast or lose an erection, and she craved a really long fuck with a rock hard cock. That's why she injected my cock with a drug that would constrict the vein leading blood out of it for a prolonged period, giving me an erection that won't go away for hours. The other injection was a local anesthetic that would numb my prostate, delaying my orgasm for several hours as well.