The Tabletop (Romance) scene is just the Tabletop scene but you are dating. Either don't hang out with him after "Frenemy" or keep his love points under 75% to see it after you start dating.
You are right about the friendship ending! For some reason it required Wizz to be dating Rose, but I disagree with that, so I've changed it to only require seeing "Rabbit Season" and going to band meeting (scene will happen immediately w/romance, happen after love points > 80% for friendship). This will be in the next patch so if you want to see the scene now, the current requirements are Rose dating Wizz and relationship points > 80%. Sorry!