Hi I found this on a website to what Nick looks for in a girl.
Nick Jonas has said that beautiful eyes and a smile are the biggest thing that attracts him to girls. (He does believe in love at first sight too). He says that he can tell someone's personality from looking in their eyes.
He LOVES girls looking lady-like. He said the most flattering thing on a girl is a nice dress. He doesn't like girls who dress inappropriately.
Another big thing is understanding Nick's schedule. He says that he's away for long periods of time and he needs a girl who can realize that he's really busy. But he would rather text a girl than call her and he believes keeping in touch is really important.
Nick says that he's not very energetic so he needs someone with more energy than him. He doesn't like a particular type of girl, just one who likes him for who he really is and isn't interested in his money/fame etc. His girl has to be focussed and serious yet playful at the same time. He says that manners are important too.
His dream date is taking a girl to a NY Yankees game and watching them beat the Red Sox.
He hates it when a girl is afraid to eat in front of him. He likes healthy girls who take care of their bodies.
(BTW, his celebrity crushes are Anna Kournikova, Brenda Song and JORDAN PRUITT the most. He supposedly dated Miley Cyrus too.)
Here are some quotes I found:
Nick: Boys don't really know what they're doing half the time. Sometimes I'm oblivious to flirting, and I just have to ask, "Okay, what's the deal? Are you into me or not?" Or I'm the last one to even realize that I have a girlfriend until someone mentions it.
Nick: I know that true love is definitely out there.
Nick: I have two modes. First I get really quiet, but then I'm the complete opposite, where I'm like telling jokes. How I act depends on the girl. It helps when a girl's really confident because then I don't feel like I have to entertain her.
Nick: I have a tendency to sort of look away when I start to like a girl. So if I have to work hard to look in her eyes and be engaging during a conversation, then I know it's cool and it's for real.
Nick: I wouldn't date a girl with a bad attitude. I'm "Mr. Positive."
Nick: I've never had a girlfriend during Christmas time. But I think the perfect holiday date scenario would be Christmas in New York City. I'd like to go down to central Park, hang out by the ice skating rink, possibly Rockefeller Center. There's a couple of thing you've just gotta see when you're in New York City.
Nick: You should be able to share everything with your girlfriend.
Nick: I know I've been in love, but I waited a long time before I said the word "love" to someone even though I'd been thinking it, because I consider "love" to be more than just a word.
Nick: It's embarrassing for me to text message back and forth with a girl. I'm asking all these questions just to continue a conversation when I should just be hanging out with her.
Nick: When you're texting, you can say things to a girl that you'd never say in person. You just type what you want and press send.
Nick: My first kiss was really good. It was looking over the city skyline. It was sweet! It was awesome.
Nick: Yeah I've avoided girls before, but for a reason. If I like a girl, there's a chance I don't know what she's thinking. So I start to question the situation. I want her to notice me, so I play it cool.
Nick: I crush on girls who are kinda quiet, too.
Nick: My favorite way to impress a girl is by singing to her. I want to serenade her, or at least try to.
Nick: I really love dresses [on a girl]. I like a girl who looks like a lady.
Nick: I need a girlfriend who'll just have a good time with me.
Nick: My pick up line is, "Slow down, sugar, because I'm a diabetic"!
Nick: I love earlobes! No, I'm kidding. I would have to say if a girl has beautiful eyes, I'm going to be interested.
Nick: (on what he looks for in a girl) I look for someone who has confidence. Also someone whose energetic, cause I'm NOT that energetic.
Nick: (when he calls a girl) My heart starts beating really fast and I have this thing where I gulp sometimes.
Nick: Some girls try too hard to get guys' attentions by not wearing much clothes. When a girl dresses nicely with good taste it says that she has confidence and that she takes pride in her appearance.
Nick: What I'm looking for in a girl is someone who will understand my crazy schedule and will be there to support me. Just a girl who will make me smile and keep me happy.
From this it's easy to tell that Nick is a very sensitive, caring, compassionate, sweet, talented, handsome guy. 
