My mother's new boyfriend insists on showering with me.

My mother and her boyfriend are at home and since i don't even feel like seeing them, i decide to take a bath and make time for them to leave. my mother waits in the kitchen while her boyfriend goes up to change. the last thing she expected is for her to spy on me in the bathroom and see me while i jerk off. she gets into the shower with me and starts rubbing my cock nonstop. how morbid it gives me to have my mother's boyfriend's cock in my mouth.