I need some advice on this somewhat tricky subject. A bit of background first. In early 2009, I had seen the PIXAR movie known as WALL-E and joined a forum dedicated to the movie (among other things later on) in the middle of that year. That's where I had my first relationship with Catherine in mid-2010, an agnostic (later turned Christian due to my testimony sometime in early 2011), which lasted until the middle of 2013 (minus the small breakup between July and December of 2010). At the same time, I met other friends from around the world, three of them I ended up meeting in real life (Catherine in 2011 (twice), Madison in 2013 (once), and Kirsten in 2014 (five times so far)).
This girl that I recently met, Kirsten, is the primary subject of this topic. Ever since I first laid eyes on her, I started developing some feelings for her. We had known each other for five years beforehand only in an online environment, and it was in mid-August of this year that she was right there, face to face with me in my own backyard. After spending quite some time with her, I started to develop a crush on her. I got to know her better as we talked and found out that she's an agnostic. She just doesn't know what happened, but is likely to make a choice if she see's concrete proof. When we met late last month in October, I told her that I have a crush on her, and she described the feeling as neutral. The past relationships have been a disaster one way or another (how, I have no clue) and she seems to wants to spare me from that.
But I seem to think that it goes further then that. It feels like unrequited love, where I love her and she doesn't love me, even though I have not asked her weather or not she does. The advice I'm asking for in this thread is about dating a non-believer, that is, if she does indeed want to have a relationship. From my understanding, the Bible doesn't say anything about dating, due to dating being a more recent phenomenon that has only existed within the past century or so. I know about the whole equally unyoked doctrine, but I dated Catherine for several months as she was a non-believer before she was converted, so why can't the same thing happen with Kirsten? I guess that's just my logic. But anyways, I've been praying about her quite often these past three months. I just want it to work out somehow.