I think there's a big, big difference between kids exploring who they are, and understanding adult sexuality. My daughter has said she's gay since she was five years old and has 'girlfriends', and she insists still that if she married, she will only marry another girl. Is she gay? Possibly. Can she know that now? Not in the way that adults understand sexuality.
And I'm not parading her around social media tying her into a public identity.