How would you feel about a guy who is Christian while you are not a Christian?

I'm a 22 year old Christian guy. I have never drank alcohol, smoked anything, or done anything illegal. I don't swear and spend a lot of time with family and rarely go out with friends. I go to bed early and I have a flip phone.
She is 18 years old and says she is "Christian" but not really into it. She has gotten drunk a few times, has some friends who do illegal things(drugs, weed), swears, always with friends and constantly on her iphone.
I'm not judging either of us but I'm showing the differences and I'm wondering why she is interested in me?

She has hinted several times that she likes me and I like her but I'm afraid she will grow tired of me because I'm boring, mild-mannered and I don't party. She said she would like to try church with me.

So I'm curious how non-Christians view Christians when it comes to dating? Is it a turnoff that I play by the rules when she does not always? She is not at all trying to change me, maybe she wants a change? Does she see something in me she likes, and would like to imitate? (That is not meant to sound conceited, but rather imitate my relationship with God) Please don't judge either of our actions but rather answer honestly.

Pray about this;God will give you the answer. Invite her to church & see how things go afterwards. Start going out more & show her the opposite style of life she lives; she'll probable like it.