Complicated Relationship

It's been a month since school reopen. Chinese New Year had passed and the month of January left us. I was busy and lazy to update my blog.
Anyway, I'm not going to summarize of what happened to me last week.

Today, my main topic will be about Relationship, to be more specific, relationship between Guy & Girl.
We, no matter we're in a relationship, use to have a relationship, never had a relationship or soon to have a relationship, must consider about this. Cause, this is all related to us(for Christian), I mean in later part of our life, we will have to have a 'Life Partner'(except that you want to be single for whole of your life). Here is the case that I would like to study:

There's a guy. He is a Christian. He is a loyal guy. He love a girl who is a non-christian.
I can't make it clear or specific cause I don't want to reveal who is him here.
Here's the story:
The guy and the girl were classmates.
The guy loves the girl so much that he sacrifice and change himself for her.
Even now the path that he's taking now, part of it, was because of the girl.
He was a quiet guy, he don't really mix around with people.
He knew that if he continue to be like that, she will never notice him.
So, he changed. He became very active in class, he talked and joke a lot. He mixed around with his classmate, played around crazily in class.
Many people knew that he likes her, but he never confess to her.
Until one day, he took up all of his courage and called her, and confessed to her.
Her answer made him disappointed. But, he never give up on her.
During her birthday, he bought a cake, made a cd with songs that contain all the message that he wants to tell her, with a letter, brought to her house and gave her.
During Valentines' Day, he gave her presents.
This continue for few years, with different 'skills' each time.
He became a better christian,he was a good christian,but because of her he became a better 1.
He wants to show a good testimony to her, he wants her to know that Jesus loves her. He wants her life to be saved. He wants to be with her FOREVER, not in this life only, but forever!
But, she's stubborn. She refused to accept christ.
Nevertheless, he still love her.
He waited her for 3(or 4) years although she rejected him many times, he didn't give up.

Finally, one day, after a long long time, her answer was different. She was touched by him, she falls in love with him. She wants to be together with him too!
But she claimed that she needs some time to prepare, so he gave her time, till 14th Feb, 2009, that's the Valentines' Day.

The story didn't end yet, both the main characters and I(the narrator) also don't know what will be happening next.
Can they live happily ever after? I don't know..

But here is what happened after the day she confessed back to him.
He went to bible study, and it was so 'coincidence' that the topic was about relationship between boys and girls. He talked with his church member, and suddenly their topic was revolving around relationship problem. And the content of the topic seems like telling him that he should not start a relationship with a non-christian. It's just like God is talking to him through different people. He started to become worried.

Between God's will and Relationship, which one should he choose?

He asked for my opinion. I gave him my opinion. Then he replied me with things that I never thought before. Before this, he had a talk with a uncle, and his points was that a Christian should not start a relationship with a non-christian.
It was hard, real hard decision.

So, I actually asked my sunday school teacher about this, and his opinion is different from that uncle. He said that the bible didn't say that a Christian ought to be with a Christian, but it is better to be with a christian no matter how. He said, to start a relationship with a non-christian is ok as long as u try your best to touch her/him with the love of Christ but it is not so good if want to marry with a non-christian.............

There's some other things which I don't know how to put in words.
The whole thing is rather complicated.
For me, it is ok to be with a christian or a non-christian, I will lead and guide her to become a christian if she's a non-christian. That's what I think last time.
But now, after so many things, I think I need to re-think about the whole thing.
I need to have the best answer for this question.

May God guide him throughout the whole path that he must take, Valentines is very near now and hope and he and she will found out the best solution for both.