This is primarily a MM story but a small mention of MF with my sister. We left for college in August of last year. We are a the same college. The college has two campuses. We are on the older of the two. The dorms are older and one is boys, one girls. Each room houses two people. Bathrooms in both dorms are always at the end of the hall with the showers attached. Showers are open with shower heads lining the walls. Both of us coincidentally were on the top floors of our dorms. We are about 400 miles from home but each of our room mates lives close enough to go home most weekends. On those weekends, we get together, usually in my room for over nights with loads of mutual jacking/jilling/massaging.
Anyway, now the MM part. My roommate seemed pretty cool when we moved in. I didn't want to tell him I sleep nude though. The first few nights, I slipped my boxers off under the sheets. A couple of times I woke up with my sheets off and fully exposed but he was always asleep. Anyway, after about two weeks, one night I woke up about 3:00 AM and there was enough light so I could see him stroking his cock. I decided that here is my chance. I slowly and quietly grabbed by morning wood and did the same. Once I knew he saw me, I threw my covers off and continued till I exploded. We talked an little after this and agreed we had no issues with jacking off. I also then told him I sleep nude and he said fine; he might try it too.
Within a week, we definitely discovered we were bi. I would still say I am 75% straight, 25% gay but he confessed, he is probably the opposite. Fine with me. What happened was we were watching a cam site, and decided to go on ourselves. Soon we were naked and decided to try jerking each other off. This is the first time I touched another guy's cock. I felt weird at first but soon I was taken up in the moment and almost on queue, we came at the same time shooting streams of cum all over each other's faces.
We continued our fun on and off over this first year. I did tell my sister about it but she never came over during our 'sessions'. She said she'd kind of like to try with her room mate but she doesn't really seem like the type. Quiet and a little snooty. My sister just sleeps in a t-shirt herself but she feels she has to remain covered up in her room.
More to come about me and my sister this past school year.