Well a lot of people say Dave’s gay instead of bi and it was heteronormativity/internalized homophobia that made him want to be with girls I guess so he might be bi or gay

He pretty much explicitly mentions his attraction for both John AND Jade during his heart-to-heart to Dirk, even if there was compulsory heteronormativity to some extent, he most definitely seems to be bi. Also, don’t get me started on his obvious Mommy Kink.