I am a 19-year-old guy, and my step bro was 24. He's taller, athletic, and masculine. He is an attractive and very quiet man. We always have a family gathering, play PS together with our cousins, and go on adventures, but we are not that close to each other.
One day, we planned to have a one-night stay at his house with our other cousins. We mostly sleep in the living room together while he sleeps in his room. Unexpectedly, he asked me if I wanted to sleep with him that night in his room because I was the youngest in the group, and we were too tight in the living room. So, I said, "Sure."
When I entered his room, he locked the door, and he suddenly took off his shirt and sweatpants. So he only wears boxers. He said, "I can only sleep comfortably with this." and I was like, damn... he's hot. We were in the same bed, and I was lying sideways, facing oppositely. After a few minutes, he gradually moved closer to me until he reached my back and spooned me. I fucking felt his hard 6 inches cock rubbing on my ass. He said, "I had a feeling for you, and I like you." He slowly touched my hips and took his cock out and he wanted me to feel his dick from behind. Since I liked him too, I confessed to him and started to rub back my ass on him. He is so fucking horny and didn't hesitate to just stroke his dick on me. I started to give him BJ, and he moaned so hot. After that, I sat on his dick like a cowgirl and touched and licked his chest, nipple, armpit, and biceps. He fucking moan with his breath. Then, he changed position to doggy, first, he bit and sucked my butt cheeks and left a lot of hickeys, and fucked me again. With this position, he was so wild and fucked me so hard and started to squirt, and that loud sound when his pelvis was constantly hitting on my ass. I warned him maybe they could hear the sound, so he changed into a missionary. He was so warm and sweating, and he kissed me so hot and spit on my tongue and continued fucking me.
After about 20 mins., he whispered that he was about to cum and asked if he could cum inside. I said, "Hell, yeah." So, he choked me so fucking good, and he stroked his dick so hard inside and cummed inside. I fucking felt his warm load, and still stroking his dick slowly on me. He lay down on me and didn't pull out his dick yet. He rested for a few minutes and went back for the second round. He is so fucking energetic, and he tried all the positions he wanted to try. We fucking enjoyed that night and wanted to do it every weekend.