Ouji-sama no Tomodachi

Every girl Rui crushes on confesses to his best friend instead. But can you blame them? His buddy Mia may be a beautiful girl, but she has the bearing and personality of a shojo manga prince, which drives the other girls wild. When Rui can't break his heartbreak cycle on his own, Mia offers to train Rui in the art of romance...by becoming his practice partner. But with Mia whispering sweet nothings and blushing at every touch, it's starting to feel like she's the one getting swept off her feet.

(Source: Seven Seas Entertainment)