I am visiting my step-sister and her husband who are having a rough time right now due to some life changes. While I was washing their dishes, her husband comes to vent at me that they are not having a lot of sex lately. I felt so bad for the poor guy, he was really trying hard in their relationship. After we talked, I asked him about using their shower when I was done and he said sure, he just needed to have a 20 minute nap first. After some time went by, I walk into his bedroom and to my surprise he is jacking off! He tries to cover but I get it, life has been tough. So I suggest he just continue and finish really quick. He is a little embarrassed at first but agrees. While he jerks off, I really cant help but notice what a nice cock he has. I catch myself stroking my chest as he watches me intently. I let him finish as he stares at me. I need a new towel now but I bet he feels loads better!