Barbacoa is the second of this author's books I've read (the first being Day of the Dead) and I absolutely love his storytelling. Judging by these two stories, he's clearly not a romance author. He doesn't include erotic content and all sex scenes are off-screen. His stories also don't guarantee an HEA. Honestly, I think he's more of a gay fiction writer than MM.
That being said, this was another exceptionally well-written story. It weaves together two parallel stories from different time periods. One is set in the 15th century Aztec culture, and the other is set in present day Mexico.
In my opinion, there are two possible ways to interpret the connection that exists between these stories. Viewed through a secular lens, both stories highlight same-sex pairings. The modern day couple discovers the skeletons of the historic couple during an archaeological dig.
However, I'd also argue that one could choose to interpret the stories in a more spiritual perspective. One might speculate that the modern day couple is possibly the reincarnation of the ancient couple. There are several instances where the author sort of alludes to this, but it's very subtle.
Anyway, the original couple, an Aztecan warrior and his slave boy, have sort of a Romeo and Juliet romance. But the modern story ends on a much more optimistic note. And it seems to me that if you believe that humans go through similar lifetimes learning lessons until they get it right, that this story would make a lot of sense.
Remarkable historic research must have gone into the telling of this story. The world building is spectacular. I enjoyed the book very much.