So, my understanding after reading some old threads is that most conflict in men's romance tends to be external rather than stemming from the relationship(s). Misunderstandings, miscommunications, one person being an unsexy bastard to the other, etc. leading to third act breakups or something are, generally, much less likely to pop up or last for very long.
However, some of what I've read lately (Neon Heartbeats: Flux, Princess of the Void, and I'm partway into Rhenna) have involved the FMC doing something that they were pretty quick to apologize for.
Flux: >!Her acting like a yandere stalker for two years leads to a misunderstand where the MMC thinks the literal manic pixie dream girl who "recently" took an interest to him was spying for the megacorp she works for.!<
Princess of the Void: >!She thought she had to mind control the MMC into helping her escape, and was in a vindictive mood after being powerless for so long. So, Sykora treated him more like a prize than someone who seriously risked everything for her until she quickly realizes the truth.!<
Rhenna: >!Loses control of her instincts, nearly killing the MMC in a mating frenzy until she snaps out of the trance and realizes what happened.!<
Apologies ensue, but the stories don't linger on those moments for long and the closest thing to a grand gesture was Flux giving Rowen >!blackmail material that could ruin her in a heartbeat!<. I didn't think of them as "grovelling" at the time, nor am I really into that kind of drama.
But maybe that was just me being overly analytical while reading, or maybe the standards for a "grovel" are different in men's romance?
Sorry if this got a bit train of thought-y, but I'm curious for the community's take on the subject. Especially since I have seen the odd request for two for a story where the FMC is the one to grovel.