Some sort of soft, gentle massage would be medically beneficial. Hands can be a bit rough sometimes, maybe you could use your tits and smoosh them into my lower back. Oiled up, preferably. If my back is too sensitive you could massage the front, maybe in the penis area.
This is a prescribed medical procedure, so it's my health you would be helping with. By fucking me. And allowing me to play with your beautiful, huge tits.
I have a bit of bad news. I have had a bike accident and damaged my back. I've had an MRI and a vertibra is out of position, causing the area to swell and press against my sciatic nerve, which is painful. The doctor suggested some physiotherapy exercises and to reduce stress by playing with the most beautiful pair of tits I know of. This is where you come in, or rather you are who I cum in. May I cum inside you after playing with your tits for ages?