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Plot twist! Danny's into that too. He wants someone to match the dramatic flair, and would you look at that? He's got it. And, well, bonus points to Jason for not minding getting French dipped by a twink. Seems to be the opposite, in fact.
One of those "Danny needs a consort" fics where a bunch of people are invited to a mass speed dating event. The invitation uses prettier words but thats what this is. Now Batman wants to go get a look a this super powerful being and see if he's a threat or ally, and would you look at that, most of his children fall into the age bracket the invitation specifies 
(or maybe the batkids have just been touched by death enough they're viable candidates and got personalized invitations. Either way Bruce wants to go)
So Batman says a few of his kids will go and he's tagging along as a "chaperone". Maybe a few other JL members do the same with their proteges. The hard part for Bruce is actually getting his kids to agree to go. The biggest surprise is Jason finds out and demands to go.
Now Jason, a known lover of regency period romances, read a copy of the invitation the JL got and knew exactly what this was. There will be a ball. The word "courting" was used. This is a chance to live out his secret romance novel dreams and nothing is getting in the way of that. So he calls the batfam to say he's going
The batfam are like flabbergasted that Jason wants to go to a spooky speed dating event but it has the added bonus of getting the kids to start volunteering bc they have to know why Jason is so excited about this