There is a lot of romance for m/m romance in the romance book community. In romance books 'M/M' or 'MLM' is used refer to romantic relationships between two or more men. M/M stands for 'male/male', and 'mlm' is a shorthand for 'men-loving man' which personally I find rather charming as a descriptor.

Even though the male protagonists in these books can be either gay, bisexual, or pansexual, the central love story will be between men.

I have compiled a great list of romance books featuring male protagonists in love with each other, and I hope you'll enjoy them too.

• #21 The Magpie Lord (A Charm of Magpies #1) - K.J. Charles

  

  contemporary paranormal regency steampunk dark romance

  A lord in danger. A magician in turmoil. A snowball in hell.
  
  Exiled to China for twenty years, Lucien Vaudrey never planned to return to England. But with the mysterious deaths of his father and brother, it seems the new Lord Crane has inherited an earldom. He’s also inherited his family’s enemies. He needs magical assistance, fast. He doesn't expect it to turn up angry.
  
  Magician Stephen Day has good reason to hate Crane’s family. Unfortunately, it’s his job to deal with supernatural threats. Besides, the earl is unlike any aristocrat he’s ever met, with the tattoos, the attitude... and the way Crane seems determined to get him into bed. That’s definitely unusual... more

• #22 Chase in Shadow (Johnnies #1) - Amy Lane

  contemporary m-m (gay) secret child college cruel hero/bully

  Chase Summers: Golden boy. Beautiful girlfriend, good friends, and a promising future.
  
  Nobody knows the real Chase.
  
  Chase Summers has a razor blade to his wrist and the smell of his lover’s goodbye clinging to his skin. He has a door in his heart so frightening he’d rather die than open it, and the lies he’s used to block it shut are thinning with every forbidden touch. Chase has spent his entire life unraveling, and his decision to set his sexuality free in secret has only torn his mind apart faster.
  
  Chase has one chance for true love and salvation... more

• #23 Something Like Summer (Something Like #1) - Jay Bell

  m-m (gay) cheating love triangle friends to lovers college

  Love, like everything in the universe, cannot be destroyed. But over time it can change.
  
  The hot Texas nights were lonely for Ben before his heart began beating to the rhythm of two words; Tim Wyman. By all appearances, Tim had the perfect body and ideal life, but when a not-so-accidental collision brings them together, Ben discovers that the truth is rarely so simple. If winning Tim’s heart was an impossible quest, keeping it would prove even harder as family, society, and emotion threaten to tear them apart.
  
  Something Like Summer is a love story spanning a decade and beyond as two boys discover what it means to be friends, lovers, and sometimes even enemies... more

• #24 Camp Hell (PsyCop #5) - Jordan Castillo Price

  m-m (gay) suspense abuse urban fantasy mystery

  Victor Bayne honed his dubious psychic skills at one of the first psych training facilities in the country, Heliotrope Station, otherwise known as Camp Hell to the psychics who've been guests behind its razorwire fence.
  
  Vic discovered that none of the people he remembers from Camp Hell can be found online, and there’s no mention of Heliotrope Station itself, either. Someone's gone through a lot of trouble to bury the past... more

• #25 Breathe (Breathe #1) - Sloan Parker

  contemporary enemies to lovers suspense mystery angst

  Lincoln McCaw lost everything — his home, his job, his partner — after he caused a fatal accident. A year later, he's drowning the guilt and despair in whiskey, but he needs to move on. His sister and her kids are counting on him. Then he meets a man who ignites a passion Lincoln thought he'd never find. Too bad one night is all they can have together. Now he needs to figure out how to turn away from the only person who makes him feel alive . . . before whoever is sending him threats decides Lincoln needs to suffer more than he already has.
  
  Jay Miller is surrounded by grief and misery until he finally gives in to all those years of sexual fantasies about being with another guy... more

• #26 Bulletproof (A Matter of Time #5) - Mary Calmes

  m-m (gay) contemporary alpha male suspense mystery

  Jory Harcourt doesn't have to go looking for trouble. Wherever he goes, it seems to find him—particularly when his partner, Sam Kage, is working undercover on a federal task force.
  
  After the recession forces him to close his business, Jory goes to work as a matchmaker and event planner. From there, it's only a matter of time before his big mouth and up-front attitude make him the rope in a tug-of-war between a trust fund baby and a drug-smuggling criminal. Then, as if that situation weren't delicate enough, Jory's undercover lover shows up working for the smuggler... more

• #27 Who We Are (Bear, Otter, and the Kid #2) - T.J. Klune

  erotic romance friends to lovers funny contemporary bisexual

  Bear, Otter, and the Kid survived last summer with their hearts and souls intact. They’ve moved into the Green Monstrosity, and Bear is finally able to admit his love for the man who saved him from himself.
  
  But that's not the end of their story. How could it be?
  
  The boys find that life doesn’t stop just because they got their happily ever after. There’s still the custody battle for the Kid. The return of Otter’s parents. A first trip to a gay bar. The Kid goes to therapy, and Mrs. Paquinn decides that Bigfoot is real. Anna and Creed do… well, whatever it is Anna and Creed do... more