Rooming with my brother [mmf]

When I was a freshman in college, I was able to live in an apartment off campus with my older brother. He is 20 and I’m 18. We had a good arrangement. He was not the normal over protective big brother so I could come and go as I pleased as long as I kept him informed of my plans. He rarely went anywhere other than to school. As a computer nerd, he would come home and disappear to his room for most of the night. He is a good looking guy so I’ve tried to get him to get out and meet some of the coeds on campus. He would always smile and say that he was to busy.
I tried to go home one weekend a month but he rarely visited home anymore. On this particular weekend, my Friday classes were canceled so I went home a day early. I normally drive back on Sunday afternoon but a big snow storm was coming so I decided to surprise him and come back Saturday night.
When I walked in the door, I could hear music coming from down the hall. His door was cracked open and I peeked in to see if he was awake. I froze in my tracks when I saw him and another guy, naked on his bed. They were kissing and the guys each were stroking the others cocks. I had no idea he was gay, but it made sense now. I could not look away from them. My brother was hard and looked to have about a 7 inch cock. The other guy was semi hard when my brother moved down and took his cock into his mouth. I could feel my pussy getting wet watching them. I found myself rubbing my breast thru my shirt
After his lovers cock got hard, it was at least as long as my brothers. My brother grabbed some lube and placed it on the guys hard cock. My brother laid on the bed with his ass elevated as his lover applied lube to my brothers ass hole. I unzipped my jeans and reached my hand inside my panties. My pussy was swollen and soaked now. I leaned back against the wall as his lover inserted his cock into his tight ass. He began fucking him hard as my hand was playing with my hard clit. My brother was stroking his own cock as he was being pounded from behind.
My other hand is under my shirt now, pinching my nipple, my orgasm is rapidly approaching as I’m lost in the scene before me. My brother shot several streams of cum onto the bed beneath him. His lover grunted and came deep inside my brothers ass. I lost control had a very intense orgasm. I can feel the wetness running down my legs.
When I calmed down, his lover was removing his flacid cock from his ass. With it came a large glob of his cum, running down my brothers ass. I scurried back to the front door where I opened it and acted like I just got home. They quickly closed his door and I went to my room. I mastubated twice more that night, thinking about what I was witnessed.

Source: reddit.com/r/Erotica/comments/z79k9u/rooming_with_my_brother_mmf