Causes me to remember one guy, he was definitely straight, but we had a few occasions, and in all the years we knew each other, to my knowledge, no other guy did it for him. It happens, and was grateful for the time, and enjoyed him, whether we were together or not. It was definitely difficult for him to wrap his head around it, but he made the effort, and gave him all the room he needed. What else can one do, when there is what there is.