Nick Jonas says Olivia Culpo makes things "easier"

He told PEOPLE magazine: "I think anytime you have a teammate it makes things a little easier. It has been a wild ride and a crazy year and a half. It's been really special."

The 22-year-old singer previously admitted marrying Olivia would be "ideal".

When asked if he is considering marriage, he said: "At some point. It would be ideal [to settle down], but we're still quite young and we're going on a journey."

And Nick previously revealed he had never celebrated Valentine's Day until he met Olivia.

He said: "Until last year I'd never celebrated it. People put a lot of emphasis on the day, which can be problematic, but last year Olivia and I and two of our friends went on holiday to the Dominican Republic, which happened to fall over Valentine's Day. That was awesome."

But things weren't always perfect for the pair as Nick admitted he would get jealous early in their relationship.

He shared: "I think earlier on in my relationship, there were times where I would get jealous.

"I think with time and trust built up, a lot of that went away. We have a really strong relationship now. It takes a second until you feel really locked in with someone."