Ex girlfriend problem- short?????????????????

I went out with this girl and everything and we broke up and stopped speaking, recently we started chatting again and now we hang out alot. Theres this guy who i really liked and he now has a girlfriend so i was really upset about this and i spoke to my ex saying i was really upset and i dont know what to do and she is being really off with me saying things like: ' I didn't even think you spoke to him' and ' Why are you upset? you can still speak to him' and then i said stop being so snappy with me and she just hasn't replied to my text. What is this all about? and What should i do? Thanks for all answers x