New books where the MMC Betrays the FMC (Released in the past 3 months)

My previous post was removed because I didn’t specify what I meant by “new release.” Taking the mods’ advice, I’m reposting with more clarity.

I’m looking for books released in the past three months where the MMC betrays the FMC in some way.

The betrayal could be cheating, overhearing him trash-talking her, or anything else that qualifies as a betrayal. HEA is a must and I don’t want a new MMC.