Girl really let me down, and I need validation?

Me and a girl friend have recently been hooking up. We both started to like one another a lot recently, and finally, it just happened. The only reason we didn't date is because one night when we were sleeping together (literally sleeping, I don't have unless I am dating), she dropped the bomb saying that she still had feelings for her ex. I said that is fine, and I will wait until she is ready. Well, last night we all went out to a club, and yes, we were drinking, but she basically ignored me half the night, which I was still alright with, I can't dance worth one fourth of a damn. However, when we finally got home, she burst into tears because her ex called her, and despite her hanging up immediately, she still got overwhelmed, locked me out of her room, wouldn't speak to me for awhile, and then proceeding to ignore me again for the rest of the night. I thought the feelings were there, and maybe they were at the time, but I'm deciding what to do with the situation. I believe I know, but I just need some coercing or validation to proceed with it I suppose. Thank you for any advice.