
If you're looking for manga similar to Love Me Sinfully, you might like these titles.
The spoiled Prince Anel must travel without military escort to a neighboring kingdom where tensions run high. Sastre, an honorable Guardian, is brought in to be Anel's only protection for the journey. Anel is enchanted by his noble bodyguard, but Sastre becomes more interested in Kaleth, the spirited servant and lover of Prince Anel. Kaleth is forced to disguise himself as the prince to be a decoy for his enemies. Sastre duty is to protect Prince Anel, but in his heart he'd rather keep the decoy safe from harm.
Sakurada of the Tokyo metropolitan police is assigned to cover personal security for Prince Noora during the prince's trip to Japan. The prince takes his official duties seriously, but in his downtime all he cares about is cute boys and teasing his security personnel. And sometimes he acts extremely un-princelike, triggering disturbing suspicions for Sakurada.
General Sei, legendary hero, guards Landa from his command post on a naval ship. Unknown to him, among the new ensigns on board is a young prince who is secretly plotting his return to shore! Can the weary general refuse his prince's calling?
Police officer Ahane is exasperated when he is assigned to guard Prince Laronne, a young exiled prince who has no regard for his own safety. However, his frustration turns to horror when he discovers the infatuated prince is more interested in using him as a personal escort!
Narumi Imai has been with the FBI in Washington DC for six months, and already he has been recognized as the best man for... odd, chore-like jobs. As much as he wants to work in the field, his first opportunity comes under a bizarre set of circumstances. Narumi is the personally chosen bodyguard of Keith Coburn, a former FBI agent brought in from prison to HQ just seven days before his scheduled execution. Both Keith's mission and life have a time limit, and for the next seven days, Narumi will be his companion on the stairway to Heaven.
Haruma Kagetsu, grandson of the super wealthy Kagetsu family, and his bodyguard, Shoyo Kurehashi, are officially in love. However, the inseparable duo get split up...!! Haruma does his best to subdue his anxiety, but the beautiful bodyguard Glen makes a move! Can Shoyo and Haruma protect true love...?
Inexeperienced Haruma has accepted his feelings for his teasing bodyguard, Shoyo. He's fixated on their relationship, though, and toyed with to no end! Bodyguard-slash-boyfriend Shoyo and innocent Haruma become one emotionally and physically for the first time!!
Coming to save Aoi Yamato (the son of a huge enterprise and kidnapped for ransom) is Prince Charming... Or, more like an arrogant and rude bodyguard...! Lo and behold, this man in black is Ryo Uruha, the boy Aoi used to bully in junior high. He's supposed to be working for Aoi, but he has a cockiness and insensitivity about him that riles Aoi up. Yet, there's also a soft, gentle side to him amidst his brutal honesty, and Aoi finds himself gradually drawn in....
Economist Vittorio Conti wants to see what having sex with a man is like, and does what any reasonable person would do in his situation: ask his bodyguard if he wants to give it a try. Straightlaced Armando Pagani refuses at first, but for how much longer?
A dreary palace, where there was nothing but a fight over the throne, a story filled with desire took place between a king and a bodyguard. "I've heard your loyalty is incredible, shall I test that?" "I don't know if this is because of my desire or Your Majesty's orders, but I can't stop now."