I'm not sure if going dark has worked... total nc for a few months at least and we were becoming way too disconnected. I'd say seeing him face to face and spending some time together has worked more than anything, since he too has noticed that there is chemistry between us still.
I guess it's going to be however it's meant to be... When it comes to fight or flight, he's a runner. He hates conflicts/confrontation as his parents argued throughout his childhood.