Confused about Women- Help?!?

My ex left me and took my child in 2008. I have remained in Michigan thus far, but I have decided to move back home to WV because of the lack of time I get with my daughter (who is my world), and the simple fact that I'm not happy here. Before my ex and I met, I had a female friend who I was insanely attracted to, and to an unknown extent, she was also into me, but by the time this was realized, I had already met my ex, and I am a loyal and faithful man. Needless to say, nothing ever materialized between us then, but we discussed it a few times, for closure of nothing else. So by April of 2010, I had already had it on my mind that I was going to move back home, but just didn't know when. This girl and I reconnected and began a friendship that saw both her and I through our dark and loneliest times. We eventually began falling for eachother. When I would travel down to visit my folks and family, we would hang out, but never did anything other than hold hands and hug. Now it's June 2011. I'm moving home within the next month. She has been hot and cold on me for the past 2-3 months and talked about us being together sporadically, saying things like she wasn't sure but we might be destined to be together. She told me out of the blue another guy has been coming over and hanging out for a little while, and that he really likes her and everybody likes him, but she said every time he comes over, she thinks about me, and being with me. I played it off like I wasn't angry or saddened, but I felt like I was having a heart attack. Over the next week, she rarely talked to me, not being sweet like she usually is, so I naturally began trying to figure out what was going on. I read through a few messages, and while I was down, the guy's car was in her driveway the whole time. We had it out through text and haven't spoken since. I'm as heartbroken as I've ever been, crushed, and I need some advice and to know if there's still a possibility of anything with her in the future. Thanks.