Stroking my tiny cock to my gf sucking a really big cock

My small 4" cock doesn't do much for my girlfriend so she has been exploring other men. She sent me a video of her sucking a cock that was at least 3 times bigger than mine. She did things I had never seen her do before and when she started to suck on his balls, he unleashed an enormous load that cover her entire face and chest. She was thoroughly impressed and she said there was more after the video ended but I didn't deserve to see it.