Secretly Masturbating in Front of a Friend

I decided to masturbate while my stepbrother plays and doesn't see. He came because his lights were turned off. I sat down at my computer and started playing through my headphones. He didn't hear anything because of the game and I started to get excited. At first, she caressed herself a little and when she was completely wet, she inserted a toy into her pussy. Just a little bit and he would have caught me, but I managed to cum before he saw it.