I accidentally saw a video of my boyfriend with his ex and it killed me

Hey everyone, I'm 21 and a nursing student. I had to get this off my chest because it was messing with my head. I was going through old files on my boyfriend's laptop looking for pictures of us when I came across this video. I wasn't expecting to see something boring like a travel vlog or something so I clicked thinking it would be innocent

Fuck, I was so wrong. It was him and his ex a while ago. She was kneeling on the bed with her ass in the air and he just climbed in behind her. He didn't even hesitate, he just grabbed her hips and pushed her in hard. She started moaning loudly and desperately. He immediately started pounding her so hard the bed shook. I could see every detail of how her body jumped with each thrust. How hard he squeezed her and pushed her forward. It was raw and brutal, way more intense than anything I'd seen before. He did.

Which pissed me off even more. I watched him finish. He was moaning so loudly. She tensed up and I saw him finish inside her as he pulled out. She stayed in that position, spreading her back slightly, and I watched his cum slowly and thickly drip down her