Books like Song of Achilles? Looking for queer books (preferably mystery/ Roman Empire themed)

Hey guys! I have read the song of Achilles and then I watched „those about to die“ the new show on prime and I loved it. Now I want to read more stuff in that direction that also has lgbtq themes in them, doesn’t have to be the main character or main theme but yeah. Do you guys have suggestions?

Also I’ve been looking for queer horror books if you guys know any!