They should write self-help books for other siblings with tension issues and wavering trust. If things hit a rocky patch - talk it out. It that doesn't work then fuck each other (literally). It did feel strangely good though. Like a weight had been lifted from their shoulders. No doubt that weight would be back as the crushing weight of guilt afterwards, but for now it was good.
Sam took Dean's words as encouragement to ease his finger in deeper, rocking it experimentally. It was definitely different to fingering a girl, that was for sure. He pressed his nails into the soft flesh of Dean's inner thigh, leaving perfect little crescent moon shape marks. Hey, if Dean could mark him, then he could mark Dean. Fair's fair.