Amaeru Kubiwa

From Hoshikuzuu Scans:

Adorable-looking model, Kubota Rei, hides a dark secret...And that is a strangulation kink and getting off on seeing the marks. But one day, all of this is revealed to the tabloids by an ex-girlfriend claiming domestic violence. Although he is deeply regretful that it happened, he does not change his behavior. His manager decides that if he can't stop it, might as well find an outlet. So he hires Miyoshi, a prostitute who is okay with any type of play. When they first meet, upon seeing Miyoshi's pale skin and hair, immediately falls for him...

Included in this volume is also a story on infidelity and love triangles. "Yurete, Fureru Made": A bitter tale about adults.