Yeah - just look for the biguy friendly couples. If they're bi open, it doesn't mean they'd expect all people to play all permutations, all of the time.
Of course, but what she said, just because a couple is bi, does not mean they okay with everyone and anyone. Love your pic by the way, op, it shows exactly how some guys make their cock look so big. That comment is not a profile critique, its a compliment ...