The Legend of the Vampire Prince

One day, Queen Simone and her son Prince Bill were cursed by an evil sorceress and turned into vampires. The reason she gave was that for Prince Tom, whom she killed before cursing Bill and Simone, love is just a game. The sorceress gives Bill an enchanted rose. She said if the last petal falls off and Bill hasn't managed to find true love by then, Bill and Simone will remain vampires forever

Small clip:

"Annabelle, I'm not good for you. Go away. I think it's better for everyone if my mom and I stay vampires forever. I love you Annabelle. I know that now. You're the best thing that's ever happened to me, but I'm a vampire now. It's too dangerous for you to be with me." The vampire shed a few tears while looking at the girl he had fallen in love with.
"Bill, I will always love you. Please. Bite me. Make me your vampire princess." Annabelle lovingly placed her hand on the vampire prince's cheek.
"Shouldn't we try a kiss? After all, it's still a curse, isn't it?"
"Bite me. Then we'll be safe if the kiss doesn't work."