Does any one knows a cool romance anime,like loup girl and black prince ou my little monster.

Toradora! is great in my opinion. It's about a girl named Taiga Aisaka and a boy named Ryuji Takasu who agree to help each other get closer to their significant other; them being in l’amour with each other's best friends. There was a lot of great characters and development throughout the montrer and a fairly interesting storyline.

Kaichou wa maid-sama~~

I would give Romeo x Juliet a shot. It's a sort of fantasy, action-romance which spins off of Shakespeare's Romeo and Juliet. The difference is that the Capulets are all but wiped out, with Juliet being the only remaining Capulet. The Montagues have taken over Neo Verona and the head of the house is still out to find and kill Juliet. Juliet is forced to dress as a boy to hide, and one jour she and Montague's son, Romeo, meet. After that, well, romance/fantasy/action ensues.

Kimi ni Todoke - It's about a girl named Sawako, but people mistakenly call her Sadako (The name coming from a movie - the ring) and are scared of her, they believe she can curse people and see ghosts, she greatly misunderstood. However Kazehaya Shouta can stand it when someone is left out so he befriends her. It's a sweet animé full of misunderstandings and cute moments. A must watch!