Will My Dad Always Be Alone?

My mom and my dad broke up when I was but 2 years old, I am 18 now. He has dated several women but none of them we particularly special. In the past 3 or 4 years his prostate has gone terribly wrong, I have the fear in the back of my mind that it is cancer, and that he’s just not telling anyone. However it could just be a prostate problem that basically 1 out of every 8 men develop. He does take avodart to minimize the effects, any ways to my question… because of his prostate he is unable to have s*x, and because of this he has completely stopped dating, and I know he is really lonely, he lives alone with his dog, I have cried myself to sleep thinking about it a few times, the idea of my dad being alone for the rest of his life. At the same time, I know that there has to be a women out there who could really care less about s*x, and just love the person that he is. He is 43 years old, and I just want to know, is it more likely that he will continue to live alone, or is this comon, and there is plenty of single middle aged women needing the same as him??