Spying on my gf [F] spending time with a classmate

So my gf is the absolute opposite of shy.
Her bffs once told me they never thought that she would sattle for one man but today i found out that she still cant.

I was chilling in my room and my gf was asleep from a party she attended last night.

I went through her youtube app for watching videos as my phone is kind of broken.
Then suddenly a message comes up:

Jerome:“ hey girl with fast hands, how about we dont wait for the next party and you show me the other skills you bragged about. Also i need to see and taste what i just touched yesterday“
Attached was a dick pic (black and huge) and then another message „see its already hard for you again, hope your bf did smell your hands 💦“

I layed her phone away in shock and two more messages appeared. I sid not check as my gf got up from the messaging sound.
She walked towards me, gave me a kiss and check her phone. Her eyes widened, she blushed red and mumbled „oh babe yes its our day but i forgot about … i got some work to do with another student.. do you mind if I?
I just nodded and said“ i dont mind, who you are working with?“
„His name is jerome“
„Oh so one guy alone“
„Dont be so jealous, we hang out at party together he is a good friend!“

I was about to bust it out but i needed evidence. We are together for 4 years and i dont want to throw it away because it might be misinterpretation.

She got ready like she was about to go on a date and i noticed that she got a skirt but did not open her panty drawer. I lurked from the couch and she really was bare under that skirt. She put on a hot dessous bra which was see trough, hard push and wore a cropped top that bearly covered her c cup.
Then she put on some red lipstick and said: „we are going to eat pizza so dont expect me befor 11/12 pm, love you“ then shut the door behind her.
I waited 20 seconds and followed her around campus.
She entered one of the living spaces there and i glanced from the entry door where she was going to. Frist floor ment i couldnt lurk into the room, eventually with some luck.
I went outside and check there was a tree in front of his room and it was the perfect spot.
As it was late already the sun got down and they turned on the light in the room.
They could not see me but i could see them.
It started with them talking for a while, when suddenly my gf lifted both her legs on the couch abd presented him her bare pink pussy he got on his knees and started eating her out. That went on for about a hour for real thats longer then i could ever archieve in 2 sessions.
I dont know why i continued watching but it kind of was hot and i could even see her coming twice.
He then stood up and let down his pants to unveil his errect dick.
She got on her knees and as they turned away from the couch i got a view from the side. I could see her blonde hair bob back and forth where she nearly chocked twice.
He then held her head and started fucking it untill he stopped to pump his seemen in my gfs throat or most likely into her belly judging by his size.

They laid back on the couch to striped of their remaining clothes but did not hesitate to fuck.
She was stroking his semi errect dick and he was fingering her while they made out.

I called her so i could get her to think about us and regret her action but she got on the phone heavy breathing: „hi babe we are just done eating, it was so much i am out of breath“ she was refering to the pizza but she did not lie in that case, only the pizza was bs.
While we were talking they made out when i was speaking, i did not even had to watch as the sound was there to realize what was happening.
He suddenly kneeled in front of her and she laid on her back while on the phone and i asked how far they have come. She replied:
„Uum we done the most part so everythings nice“
I could ever hear wet sounds in the background as she was now jerking his meet above her belly. His balls were resting on her labia and he pointed towards her pussy and i could even hear her whisper on the phone „not yet“
I asked :“ what?“
„Nothing!“ she replied
I told her about my day as she was stroking his dick and he was fingering her. She must think i am to stupid to recognize the sound of a jerking dick like i never dont that..
He rested his long black cock her so that the beginning of his shaft was pressing against her pussy and the end of his dick was above her belly button, you could tell every movement as he was realy dark and she is super pale.
The suddenly i could even see him shoot on her stomache, on her boobs and even hitting her face while she scream „JEROME WOW…“ her voice calmed „sorry babe he spilled a drink, i will help him clean it“
Drops of cum ran down his shaft onto her pussy.
As she hung up she grabbed his dick with cum still on it and rubbed it on her clitoris. Her pink labia lips were hugging his black stick untill she came. She proceeded to gather the cum with her fingers and eat all of it while he watched.
Then they watched a movie or sth on the tv while casually giving him a blowjob or him fingering her.
The about 11 pm she got up after he gave her a facial once more and i knew i had to get back to my room.
I arrived and made some mess indicating i spend the whole day here.
When she arrived she gave me a kiss from which i got instant hard and pinched her into my bed.
Instantly i recognized a smell of cum and dick.
„Babe wait i have a heada..“
„No not now“ i replied and started fingering her
She moaned:„I can explain the missing underwear well just as i entered our room i…“ she stuttered but i gave her a kiss, feeling her wetness. I glance down on her once and could identify rest drops of cum on her stomache and on the upper part of her pussy.
„Fill me up“ she screamed and we fucked for one hour and she came as well as i did twice.
She smiled and said she had to shower now. I said i would first chill and then join.

Later when she fell asleep i checked her phone and saw her message to jerome:“ next time its your turn to fill me up, i bet you could give me twice as much or more“ attached was a picture of her pussy leaking cum.
He replied with a dickpic: „waiting for your glory pussy“

Btw she uses a spare messaging app to which she disabled notifications. I only found out because she had notifications enabled this morning and toni contacted her.

I dont know why i am not confronting her but it kind of turns me on and i want to see how far she is gonna go.
So there might be a part 2.

Source: reddit.com/r/gonewildstories/comments/wdoxcr/spying_on_my_gf_f_spending_time_with_a_classmate