Nick Jonas and Olivia Culpo have been dating for over a year, and they might be ready to take the next step in their relationship! According to Ok! magazine, he wants to ask her to marry him — and he's getting ready to do it before the end of the year.

"Nick has told everyone that he wants to spend the rest of his life with her," their source said.

CLICK HERE FOR SUPER-CUTE PICS OF NICK AND OLIVIA!

"They are obsessed with each other and he has even said that he wants to ask her to marry him by the New Year!"

You can tell that the former Jonas Brothers singer is crazy about Olivia. He even wrote the song "Jealous" about their relationship, because he doesn't want another guy to swoop in and start dating his girlfriend! So obviously, we wouldn't be surprised if he pops the question soon.

Do you think that Nick wants to marry Olivia? Do you like them as a couple? Tell us in the comments!

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