Just giving each other a hand.  It has become a weekly ritual. As long as you both focus on the straight porn on TV and don’t make eye contact, there’s “no homo”.

As far as you know, you buddy does not suspect that you are a cock loving fag, who want’s nothing more than to get on your knees and properly service him. As log as you can keep him ignorant of your “leanings” he will be comfortable with these mutual jack off sessions. You just hope he does not notice you licking his cum off your hand once you are finished.