Chavodel8en
Contributor
https://www.meetup.com/BeachDivers/
This group dives very often and very easy to join them and find a buddy.
Plus one for Meetup, and finding buddies thru the internet in general (you can post in the So. Fla. regional board here, or look for So. Fla. facebook divers groups). If there's a group dive, that's great, but you can also just find a buddy willing to dive that day.
Like you, my wife doesn't dive. And Im cheap, so if I can find a local shore dive buddy, I prefer it to paying for a boat and possibly find myself in a big group following a DM.
I used Meetup to shore dive in Oahu (great buddy too, took me to Electric Beach, showed me caves where sharks slept), I think I used scubaboard to find a buddy for Catalina. They were guys who just wanted to dive, and I wanted to dive, so it all works out.