Family Friend

I've retired and lived alone, my wife died of cancer 11 years ago my children all grown up and have their own families now but visit me regularly. An old friend of mine and my late wife lives in the same area as me. I was doing some minor repairs and checking the house over before the storm season started. Had a fall not badly hurt, mostly a bruised ego, I think. Anyway, I was stiff for a few days not young anymore, so I walked like I was really ancient. My friend offered to massage my back as that what was caused my stiffness. I agreed, it helped a great deal and so it became normal on her visits to me or me to her for me to be massaged. Of course, she done my whole body saying it was better to release the whole body stiffnesses than just one area. Nothing sexual at first. But one massage session I was on my back in just my shorts, for no reason my cock decided to show itself. Poking thru the fly of my shorts, my friend saw it and said she would take care of it as well. She stroked my cock until I came, of course my mind related that to every massage thereafter. My cock would show itself every massage after, my friend would take care of it every time. Then one day without saying anything first she started to suck me off. Which I enjoyed very much, but she didn't want me to do anything sexual to her. She isn't interested in any type of relationship other than our current friendship with great benefits. The most she lets me do is feel her up, she never undresses and prefers to stay friends. I would marry her if she wanted, but she doesn't want to marry again.