My brother almost didn’t pull out in time (18MF)

I suggested I take my little brother (who is a few months younger than me) to go with me because I’m scared of ghosts and being alone.
So we took off for the weekend together. I was exhausted from shopping, so we ate dinner, watched some Netflix, and just went to our shared bed. As we were watching 365 days.

I felt him staring at me during the sex scene and saw in my peripheral view he was palming himself. It was my ovulation week, so I got horny really fast. I made the first move to kiss him; he was very hard, and my pussy needed friction, so I ground on his thigh. I immediately thought of the guy I was seeing lately but fuck it. I want what I have in front of me now. We tried 4 positions that night, okay it was my first time having sex sidewards, which is kinda tiring since I had my legs up all night. He came like 3 times, almost inside me, but luckily I pushed him seconds before he busted. I feel like that wasn’t my brother because he was very aggressive and dominating.