My partner warned me not to ejaculate inside her, but I couldn't resist

I had a stern talk with my girlfriend about safe sex. She made it clear that she wanted me to pull out and finish on her tits or her mouth. But when we got down and dirty, I just couldn't hold back. I was pounding her from behind, her moans echoing in the room, when I felt the climax building. I tried to pull out, but my body took over, and I filled her with my hot load. She was surprised at first, but then she realized that I had broken my promise. The look on her face was a mix of shock and arousal, and I knew I had to give her what she wanted. I pulled out and started to clean up my mess, making sure she was satisfied in the end.