Can you be gay and aroace

Yes, you can be gay and aroace. Oriented aroaces exist. Just because you don't feel like having cake, it doesn't mean you don't know what your favourite cake is.

It is completely possible to provide yourself a label of orientation if you are aroace, considering you could be talking about someone who is romance neutral but have when experiencing feelings of the romantic sort, if they do, feels it regardless of gender, or towards a specific gender.