first time I (M19) let my girl (F19) with someone else [cuckolds perspective]

So this was a few months ago my girl wanted to sleep over her best friends house. She asked me since I’m the one who has to drive her I said she half way through the car ride she said the 2 of them where going to drink but only stay at the house. I told her that’s completely fine just don’t do anything dumb I should’ve known something was going to happen because during the whole car ride she kept mentioning she was horny. After I dropped her off I make my way home she’s texting me while I drive saying she’s drinking and just a bunch of filler in between. Once I finally get home after a 30 min drive she tells me she’s drunk and super horny and she needs my cock. I told her “well I just drove 30 mins back home I’m pretty tired” she kept begging me to come. She was sending nudes in her friends bathroom trying to convince me but thats when she tells me “what if I kissed (best friends name)” I looked at the texted shocked my cock grew hard instantly I told her “do it lmao” she then send me 3 videos each of them 3ish mins long of them making out even one of them where they both take off there bras while making out. She later ft me after I sent a pic of my cock her best friend was all over her body kissing and licking her boobs taking my girlfriend’s panties off eating her pussy. My girlfriend told me if I come I can sit and watch in person. So I drove back hard knocked on the door her friend let me in with her boobs out I walk into her room dropping my pants. I watched them scissors making out and finger each other all night in between they would both come and suck and ride my dick for a bit but mainly letting me be a cuckold to them.