Personally, I wouldn't date a girl if she flat out said she had no intention of converting. Here's a few things that you might want to think about-
*You or her (most likely both) will have to compromise something somewhere down the road. What are you willing to compromise about your faith? Is she willing to compromise something about hers? Religion will come up over and over as each of you (separately and together) face life's difficulties. Can she understand/tolerate you lighting candles and kissing icons? How about praying to our Lady Theotokos and the saints? These two issues are HUGE stumbling blocks with Evangelicals.
*What will you raise your children? This might seem like a small thing while you're dating but your faith will become a big deal once children come along. Can your wife tolerate seeing her children crossing themselves and praying to the Theotokos? How will she handle their questions as they begin to mature and begin to question their faith? How will you answer your child when he/she asks the tough questions about why mommy doesn't like your church? How will your wife answer? How will you address the fact that Protestantism is wrong (and thereby convict their mother?) What will probably happen is that it won't get addressed and the children will either leave religion or have a muddled and confused sense of their own faith.
These are not impossible situations, but they are very serious one's that will need to be dealt with with a lot of love, patience and understanding. Lastly, I'm sure you'll bring this up with your priest, right?
Edited for spelling
I would second all of the above as a warning: your friend is right about the role of interfaith marriage in divorce.
But I have to say, nothing is guaranteed. I married a baptized cradle Orthodox from one of the most Orthodox countries. She had been an atheist, but had returned to the Church years before I met her. She had become regular in going to Church, reading the Bible, etc.
In our parish their is someone who married the daughter of Protestant missionaries to Ireland, a house churcher. He met her when she was living in an evangelical house of Wheaton. I remember him saying that he thought God was calling him to marry her, despite the religious difference, and he was called to love her as his wife.
They alternate weekends for Church, one week ours, next week hers. None of the children are baptized I believe (I don't know, but I suspect that they "compromised" on letting them decide, which of course by default concedes the Protestant position), because I've never seen any of them commune. I often see him come to Vespers and other services by himself.
But in their house they have plenty of icons, and the children have theirs and their patron saints, all with mom's seeming approval. The children all take part in the Church's activities, have close friends in the parish. Their home is intact, and as far as I can see happy, holy and full of the Lord (and His Church).
Meanwhile my sons are in a broken home, go to Church only every other weekend (getting them there other times has on occassion involved police action). Last week I had a long talk with my son over the power of intercessory prayer, because he is deathly afraid that his mother is going to hell.
So like I said, no guarentees.
I almost married a Protestant back in Egypt. Besides interference from her parents (which I ended up getting anyway when I married), the problem was that her family was insisting, over my objections, that she convert to Orthodoxy (her father was Orthodox, but definitely not the one running the family). I learned through my relatives that she had been complaining that she didn't want to, but wanted to remain Protestant. Since that is exactly what I had said ("I am Jesus, but I am Jesus worshipper of Christ
[my name in Arabic means "Jesus-servant of Christ], not Jesus Christ. Of course, the children will be Orthodox"), I thought it wise to bow out (and also spread the rumor that her and her family had rejected me, otherwise she'd be a marked woman and would have difficulty getting suitors).
In end, only prayer and discernment can answer your question. Not logic.