I'm in the same boat and have debated this issue with my various split personalities since I started posting my comic about 10 months ago. I'm under BL because it's worked best for me so far (but subject to change), and based on your description, and look, your comic is way more BL than mine.
My comic is more supernatural drama with a gay protagonist, but the Drama Category on Tapas, from my experience, is a bit of a graveyard and doesn't get that many eyeballs.
I recommend using whatever category makes you happiest for a week or two and seeing how many views you get. If you're not gaining traction, label it a different category and see how it goes.