I'm not sure how big of a city you live in or if you live close to a large city, but there is a "club" for want of a better word near my city where singles 35+ can sign up for group outings. You can go or not go on any that you want. It could be theatre, bowling, bungee jumping, a cooking class, ect. There are members of both sexes. (think of senior groups for younger people)
A friend of mine and I looked into it but never ended joining. Something like that may be outside your comfort zone but that's not always a bad thing. It's not a "dating" group so no pressure.
When we were together, you said you'd die for me. Now, I think it's time you kept your promise.