I agree with BlueBelle. Unfortunately, as we age the men tend to go first, leaving those that are left who are single, somewhat in demand. In addition, there is the REASON they are single. A lot of them are single because for one reason or another they're not good partners. Consequently, there is a fair amount of playing the field and unreliable behaviour.
I've tried dating a couple of times since my marriage broke down. The first time, in my 40's, I had a pick of men (none of whom worked out) because I was significantly younger than them. The second time, early 50's, was very different. Because I was then perceived as 'older', men my age were less interested. AND unreliable. I arranged dates, got stood up. Those who were interested were not really interested in LTR, more in casual sex or a friends with benefits arrangement, neither of which I was up for.
So tread carefully. It's hard enough being messed around and hurt when we're young and there are 'plenty of fish' but in our elderly years, I see it as unnecessary angst.