Weekends Alone Now

Since the divorce, weekends have felt so different. Used to be about running errands with my ex-husband and coming home tired but happy from a long day at the hospital. Now, it's just me and silence, punctuated by an occasional call from friends who wonder why I don't come out as much anymore. Last weekend, feeling lonely, I ended up visiting an old online connection for some comfort. We met in person briefly before everything went virtual, there was still a spark. Did we make a mistake? Is it normal to feel so lost and seek solace this way? What should I do?