Leucippe and Clitophon by Achilles Tatius

Leucippe and Clitophon is an early Greek love novel, written in the same time period as Daphnis and Chloe (early 2nd century AD) and described as similar in style and parodic in nature.

In the story, an unnamed narrator is approached by a young man, Clitophon, who talks of his adventures in love with Leucippe. The narrative covers adultery, violence, passion, and sadistic cruelty.

After this story, we'll have read the two most prominent of the five ancient Greek novels. We can decide whether to complete them in April or move straight on to Virgil.

Leucippe and Clitophon is 145 pages.

I'm working from an Oxford World Classic edition which is translated by Tim Whitmarsh:
https://www.amazon.com/gp/product/0199555478/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1