Very hot encounter, and you have a lucky friend.
We had a similar situation a year ago, a couple we know had been having issues for a long time, and they finally split up. The separation was her decision, and she essentially kicked him out with the clothes he carried and his car. He did not have a place to go and, at 48, was left with returning to his elderly mothers to have a place to live.
The guy was always mild-mannered and a pushover. His wife treated him like he was useless, and he never stood up to her. My wife said he was a nice guy but had no self-confidence, and as she describes him, he is a wuss. My wife and I felt sorry for him, and when he was kicked out, we told him he could stay with us for a few days to get on his feet and figure out what he would do. He had a good job and would have lost it if he had gone to live with his mom.
A few days soon turned into six weeks, and other than going to work, he kept in our spare room engrossed in his computer. When he talked, he would cry and tell us how depressed he was. My wife always thinks she can "fix" people, and she was giving her best shot to fix this guy. One Saturday, my wife was sitting on our back porch talking, telling me she thought he needed to regain his confidence. She told me his wife had always put him down, and he had no self-worth. She also told me he had not had sex in years, which was probably a big reason for his depression.
My wife stands up and pulls her sundress off over her head, and tells me she will be back. I watch as she walks into the house in her panties. I just laughed and remarked she would be back in no time. She said she would try to find a woman to fuck him but decided he needed sex, and she would take care of him.
My wife and I were both surprised when what was pity sex turned out to be something fantastic. Our friend in the bedroom lost his meekness and was an endowed lover who could bring my wife to multiple climaxes. He exhibited a take-charge attitude and is a totally different person.