2 actor MMCs

Hi all, I remember I started reading this awhile back, and forgot about it. About 2 actor MMCs who both have boyfriends who were cheating with each other. 2nd ML went up to MC and told him their boyfriends were cheating, MC doesn’t believe at first but then finds out it’s true, ML proposes they sleep together as revenge, and so they do. They both end up getting a role in a movie or arc show together or soomething. That’s where I stopped reading, thanks!