I was not aware of the word "ludus", after some searching I found the following links:
https://en.wikipedia.org/wiki/Ludus_(ancient_Rome)
https://www.psychologytoday.com/us/blog/hide-and-seek/201606/these-are-the-7-types-love
In connection to "love", "ludus" means "flirting, playful or uncommitted love".
The Greek word for this would be "Ερωτοτροπία".
--------------------------------------------------------------------------------------------------------------------------- Vasiliki Baskou, Instructor/Director, https://learn-greek-online.com.