My boyfriend problem! Please help?

My boyfriend told me last week that he has a secret but he wont tell me what it is? He told me last week he would tell me sometime this week...tmrr our 4th month? I ask him if he is going to tell me tmrr and he ask me why tmrr? I told him that he is either never going to tell me what the secret is or its not worth sharing...he responded saying whatever! I then ask if he was mad at me and he told me to leave him alone! Does this mean he wants to break up and i dont understand why he just wont tell me his secret...i tell him all of mines...are all guys like this? ARGHHH it pisses me off! Do you think he is going to break it off tmrr? cause tmrr our 4th month anniversary and i dont know if i should post 4th month with him on fb like i normally do and i cant ask him! what should i do? just leave him alone...we were suppose to hang with a friend this weekend...idk if its happeneng! i been avoiding my phone all day! I really like this guy which is why the whole thing sucks! please help