Helping my brother

Short history, my brother was hurt in a traffic accident, a truck failed to stop and cause the accident. My brother had a spinal injury and had to undergo operations and a long rehabilitation. The rehabilitation wasn't doing as well as hoped and things looked grim for a time. Then I was out with friends and the subject of my brother came up, I was asked was he able to get an erection. I said I didn't know; the subject was dropped shortly after. But the idea had lodged in mind. I wanted to know if he could get a hard-on, so on my next turn caring for him while my mother had a break. I decided to test if he could, I had to bath him with a sponge and so he was just lying there reading a book. As I done his legs and grab him a pinch no reaction, so when I got to his penis, I gave it wash. Then started to stroke it and it did enlarge a bit, I thought. But didn't get hard and so I thought I should go a little further. But was unable as my mother returned earlier than I thought she would. But there was some good news, she had come home early to ask if I would look after my brother the following weekend. As my parents were invited out to dinner with old friends and it was in the next city, they would be away overnight. I said of course I could and no need to rush back, so I would get another chance and have longer to try to see what would work. The specialist had said everything looked fine after the operations and it may just need more time. Tests show reactions in his feet, but not strong reactions, I thought he might have a mental blockage or lazy nerves not working as they should from lack of use. Anyway, on the weekend after our parents had gone, I started to think thru my plan of action. I remembered before the accident, and I was still living at home. If I wore revealing clothes it uses to affect my brother. So, I put on my most revealing outfit and I got his attention, but no rise as they say. I kept checking on him and then it was time to sponge bath him, still wearing revealing clothing I started as was usual doing his upper body and then started on his feet. He always started reading and once at his penis I started stroking and it responded slightly and so I started sucking him and his penis went hard. The both of us were shocked, my brother had felt me sucking his cock mainly after it went erect. Like the nerves had woken up, I was shocked by the size of my brother penis. Well, he had more feeling than before, I was so horny seeing his big cock. I'm on precautions, so I decided to ride his cock and ride it I did several times before my parents returned. My brother isn't fully recovered as yet, but is able to walk by himself with crutches, but is still improving. I'm still getting him off by riding him for our mutual benefit, I don't want him to have a relapse.