I agree with all of this.
When I was in my very late 50s, an elderly neighbour - a widower - started to chat to me in the street. I thought nothing of it. He used to talk to my (now late) husband when he was out and about.
DH had had a stroke. Once, the neighbour tried to tell me that he was in his early 50s. (In his dreams.) I thought nothing of it, though I later told a friend that maybe his false teeth were only 50, but that would be all...
Another time, much later on - I can't remember how this came about - maybe discussion about my bus pass - he found out that I'd turned 60. Suddenly, he was also in his 60s. My husband was very much alive at this point.
I had been sympathising with the neighbour over the fact that he'd had a pacemaker fitted. He started laughing about the leaflet he'd been given about having sex...Okay, tried to get away...He then indicated that he'd like to have sex with me.
I went temporarily deaf and told him I had to get home to my husband. I never told my husband. Stroke victim or not, I believe he'd have made his anger known.
I was later able to compare notes with a couple of other women in the street who'd been their husband's carers. The old goat had tried it on with them too. It seems that he thinks he's in with a chance with such women for some strange reason.
Since my husband died, there have been no lecherous remarks, although there was once a comment about how it's easier to keep warm when two people live in a house. I avoid him like the plague, though he once extended his condolences. I thanked him and walked on.