It’s true that society can seem like it is organised around couples and families and it can take time to adjust to being alone. I was widowed young twenty years ago so I have had a lot of practice. Apart from the very occasional entanglement which I have usually regretted (one of them hugely) I have remained alone and prefer it that way. You grow in confidence until it seems like second nature to go solo. I have friends and do things with them too but I am perfectly happy to go to evening clubs, the cinema, theatre, concerts, galleries, talks and lectures, hiking, on holiday, anything really, on my own.
Nowadays, I prefer the company of other singles and tend to find them more interesting. Or my friends who are in relationships but aren’t joined at the hip to their SOs and don't talk about them constantly. The Bechdel test for movies can equally be applied to meets with friends.
If there is a stigma attached to being a lone woman, I no longer feel it, I just revel in my independence. I’m only seven years younger than you, manny, and I still get asked out remarkably often so don’t necessarily think that you won’t have another relationship if that's what you want. Sometimes, I say yes to dates, sometimes no but if yes, I always make it clear that I am not seeking any kind of committed relationship. I accept that I am old woman now but the last thing I want is an old man (or even a younger man) making demands and wanting to take away my independence.
Give it time, try some activities on your own and embrace your new freedom.
To LocalandLost and anyone stuck in an unhappy relationship. If you have the means to get out, do it while you have the chance. Single life can be rewarding and fun.