My mistake is was 1969. There was a Brave and the Bold issue 83 when Bruce Wayne takes in a family friends son named Lance. Lance is wild and Bruce asks Robin to have the Teen Titians hang with Lance and help him calm down and go straight. Lance dies and at the funeral Bruce is pout of costume with a couple of the Titians and thanks them for their help in the case. I am just guessing the Titians knew since Bruce was thanking them for help on a case.