Can you help me? thanks :)?

I don't know. You don't know whats going on in his life so it may not even be you, but he is taking it out on you. So the girl may be right, but its probably for another reason altogether. Us guys don't and wouldn't act like that unless something was bothering us, so it may not be you, everyone has their problems in life, and he may be struggling, help him if you can, if it is you though, avoid him till he calms down.