Club Friday The Series Season 11: Lhong Ruk (2019)

Both deal with romances with an older woman and a younger host-type guy, and both have infidelity themes and existing relationship troubles.

Appreciate that host club dance in 3 Will Be Free? You'll get more in Llong Ruk. In Llong Ruk a romance started in a host club is the center of the story, but it's not the central theme in 3 Will Be Free, though both have infidelity themes as well.