Nick Jonas has had his fair share of hotties wrapped around his finger and has been romantically linked to even more girls before the Jonas Brothers became break out Disney Channel stars. But, there's always one person he keeps coming back to and that is Demi Lovato. Of course, she dated his brother, Joe Jonas, but that was puppy love. She and Nick always seem to have an incredibly strong friendship and connection. Not to mention he has been with her through it all – her ups and her downs battling addiction, and getting a handle on her bipolar and eating disorders.

He knows it all and he's speculated to be the inspiration behind two of her songs on her new record, Tell Me You Love Me. In an interview with Noisey before her album dropped, Demi talked about her song, "Ruin The Friendship" and said, "I was frustrated with a certain situation and I was like, 'You know what, I'm just going to write about it.' And so I did, and sent [the songs] to that person, and that was…Interesting. Anytime you send a song about the person, to the person—it's ballsy. It's like, 'Hey! Here's my feelings for you!'…They knew [about my feelings], but neither of us had acknowledged [them] before. And then it turned out that person had written a song about me, and we exchanged songs."

It's important to note that the song references cigars, something Nick loves, and a strong friendship with this one person that she wants to make a romantic connection. The fact that she said this person, who we assume is Nick, wrote a song about her makes us wonder how he got to this point. Did he always have a thing for Demi but distracted himself with relationships and other women because she was dating Wilmer Valderrama for six years? Are they really destined to be together?

Nick couldn't help but give his girl some love while she performed on stage at the 2017 Jingle Ball. He posted a video of Demi on his Instagram story with the caption, "The best @ddlovato ?." It's seriously so freaking cute that he was watching from backstage. We don't know about you, but we have a feeling she was super pumped he was there.

There's no real answer to whether or not Demi and Nick will eventually end up together. But, Nick does know everything about Demi. He knows her deepest, darkest secrets and he can accept those. He knows how to act around her in terms of what she can and cannot deal with when it comes to her addiction. Nick knows how to make Demi laugh and how they can have fun together. They have grown up together and that is usually the strongest foundation for a lasting relationship.

However, let's take a trip down memory lane and check out all of Nick's ex-girlfriends. We've found out why they broke up, a few tidbits about each of their relationships and why none of them compare to Demi.

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