Quick one re separate cars to parties - we didn't do it every time not even half the time - we did it when he was tired & sometimes, altho we arrived in separate cars, we left at the same time. The two cars meant we had options.
We both understood how each other felt about socialising.
When H left early, I always knew I was married and acted responsibly. There were never times that we encountered new people without each other. I guess it depends on the individual's interpretation of the action/option. I value my independence. My engagement ring is not a full circle for that very reason - I believe in spaces in our togetherness - very Khalil Gibran.
I was/am always w my husband in my heart.